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Vulnerability Details :

CVE-2025-26465

Summary
Assigner-redhat
Assigner Org ID-53f830b8-0a3f-465b-8143-3b8a9948e749
Published At-18 Feb, 2025 | 18:27
Updated At-12 May, 2026 | 12:04
Rejected At-
Credits

Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:redhat
Assigner Org ID:53f830b8-0a3f-465b-8143-3b8a9948e749
Published At:18 Feb, 2025 | 18:27
Updated At:12 May, 2026 | 12:04
Rejected At:
â–¼CVE Numbering Authority (CNA)
Openssh: machine-in-the-middle attack if verifyhostkeydns is enabled

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

Affected Products
Collection URL
https://www.openssh.com/
Package Name
OpenSSH
Repo
https://anongit.mindrot.org/openssh.git
Default Status
unaffected
Versions
Affected
  • From 6.8p1 through 9.9p1 (custom)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/a:redhat:enterprise_linux:8::appstream
  • cpe:/o:redhat:enterprise_linux:8::baseos
Default Status
affected
Versions
Unaffected
  • From 0:8.0p1-26.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/a:redhat:enterprise_linux:8::appstream
  • cpe:/o:redhat:enterprise_linux:8::baseos
Default Status
affected
Versions
Unaffected
  • From 0:8.0p1-26.el8_10 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:enterprise_linux:9::baseos
  • cpe:/a:redhat:enterprise_linux:9::appstream
Default Status
affected
Versions
Unaffected
  • From 0:8.7p1-45.el9 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:enterprise_linux:9::baseos
  • cpe:/a:redhat:enterprise_linux:9::appstream
Default Status
affected
Versions
Unaffected
  • From 0:8.7p1-45.el9 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9.4 Extended Update Support
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:rhel_eus:9.4::baseos
  • cpe:/a:redhat:rhel_eus:9.4::appstream
Default Status
affected
Versions
Unaffected
  • From 0:8.7p1-38.el9_4.5 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Discovery 1.14
Collection URL
https://catalog.redhat.com/software/containers/
Package Name
discovery/discovery-server-rhel9
CPEs
  • cpe:/a:redhat:discovery:1.14::el9
Default Status
affected
Versions
Unaffected
  • From sha256:f33991d766b618a128fb99fbe4f9b61c5004f7c6aa73b2b38e28d59e56c64d63 before * (rpm)
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 10
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:enterprise_linux:10
Default Status
unaffected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 6
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:enterprise_linux:6
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 7
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
openssh
CPEs
  • cpe:/o:redhat:enterprise_linux:7
Default Status
unknown
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat OpenShift Container Platform 4
Collection URL
https://access.redhat.com/downloads/content/package-browser/
Package Name
rhcos
CPEs
  • cpe:/a:redhat:openshift:4
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-390Detection of Error Condition Without Action
Type: CWE
CWE ID: CWE-390
Description: Detection of Error Condition Without Action
Metrics
VersionBase scoreBase severityVector
3.16.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Metrics Other Info
Red Hat severity rating
value:
Moderate
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Exploits

Credits

Timeline
EventDate
Reported to Red Hat.2025-02-10 21:56:03
Made public.2025-02-17 00:00:00
Event: Reported to Red Hat.
Date: 2025-02-10 21:56:03
Event: Made public.
Date: 2025-02-17 00:00:00
Replaced By

Rejected Reason

References
HyperlinkResource
https://access.redhat.com/errata/RHSA-2025:16823
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:3837
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:6993
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:8385
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-26465
vdb-entry
x_refsource_REDHAT
https://access.redhat.com/solutions/7109879
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=2344780
issue-tracking
x_refsource_REDHAT
https://seclists.org/oss-sec/2025/q1/144
N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2025:16823
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2025:3837
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2025:6993
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2025:8385
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2025-26465
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/solutions/7109879
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2344780
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://seclists.org/oss-sec/2025/q1/144
Resource: N/A
â–¼Authorized Data Publishers (ADP)
1. CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://lists.debian.org/debian-lts-announce/2025/02/msg00020.html
N/A
https://www.openwall.com/lists/oss-security/2025/02/18/1
N/A
https://www.openwall.com/lists/oss-security/2025/02/18/4
N/A
https://www.theregister.com/2025/02/18/openssh_vulnerabilities_mitm_dos/
N/A
https://bugzilla.suse.com/show_bug.cgi?id=1237040
N/A
https://security-tracker.debian.org/tracker/CVE-2025-26465
N/A
https://ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/008_ssh.patch.sig
N/A
https://ubuntu.com/security/CVE-2025-26465
N/A
https://www.openssh.com/releasenotes.html#9.9p2
N/A
https://blog.qualys.com/vulnerabilities-threat-research/2025/02/18/qualys-tru-discovers-two-vulnerabilities-in-openssh-cve-2025-26465-cve-2025-26466
N/A
https://lists.mindrot.org/pipermail/openssh-unix-announce/2025-February/000161.html
N/A
https://security.netapp.com/advisory/ntap-20250228-0003/
N/A
https://www.vicarius.io/vsociety/posts/cve-2025-26465-detect-vulnerable-openssh
N/A
https://www.vicarius.io/vsociety/posts/cve-2025-26465-mitigate-vulnerable-openssh
N/A
http://seclists.org/fulldisclosure/2025/May/8
N/A
http://seclists.org/fulldisclosure/2025/May/7
N/A
http://seclists.org/fulldisclosure/2025/Feb/18
N/A
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00020.html
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2025/02/18/1
Resource: N/A
Hyperlink: https://www.openwall.com/lists/oss-security/2025/02/18/4
Resource: N/A
Hyperlink: https://www.theregister.com/2025/02/18/openssh_vulnerabilities_mitm_dos/
Resource: N/A
Hyperlink: https://bugzilla.suse.com/show_bug.cgi?id=1237040
Resource: N/A
Hyperlink: https://security-tracker.debian.org/tracker/CVE-2025-26465
Resource: N/A
Hyperlink: https://ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/008_ssh.patch.sig
Resource: N/A
Hyperlink: https://ubuntu.com/security/CVE-2025-26465
Resource: N/A
Hyperlink: https://www.openssh.com/releasenotes.html#9.9p2
Resource: N/A
Hyperlink: https://blog.qualys.com/vulnerabilities-threat-research/2025/02/18/qualys-tru-discovers-two-vulnerabilities-in-openssh-cve-2025-26465-cve-2025-26466
Resource: N/A
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2025-February/000161.html
Resource: N/A
Hyperlink: https://security.netapp.com/advisory/ntap-20250228-0003/
Resource: N/A
Hyperlink: https://www.vicarius.io/vsociety/posts/cve-2025-26465-detect-vulnerable-openssh
Resource: N/A
Hyperlink: https://www.vicarius.io/vsociety/posts/cve-2025-26465-mitigate-vulnerable-openssh
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2025/May/8
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2025/May/7
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2025/Feb/18
Resource: N/A
2. CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://seclists.org/oss-sec/2025/q1/144
exploit
Hyperlink: https://seclists.org/oss-sec/2025/q1/144
Resource:
exploit
3.
Affected Products
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Vendor
Siemens AGSiemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Default Status
unknown
Versions
Affected
  • From V3.1.5 before * (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
N/A
Hyperlink: https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Resource: N/A
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:secalert@redhat.com
Published At:18 Feb, 2025 | 19:15
Updated At:12 May, 2026 | 13:16

A vulnerability was found in OpenSSH when the VerifyHostKeyDNS option is enabled. A machine-in-the-middle attack can be performed by a malicious machine impersonating a legit server. This issue occurs due to how OpenSSH mishandles error codes in specific conditions when verifying the host key. For an attack to be considered successful, the attacker needs to manage to exhaust the client's memory resource first, turning the attack complexity high.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Primary3.16.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Type: Primary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CPE Matches

OpenBSD
openbsd
>>openssh>>Versions from 6.9(inclusive) to 9.8(inclusive)
cpe:2.3:a:openbsd:openssh:*:*:*:*:*:*:*:*
OpenBSD
openbsd
>>openssh>>6.8
cpe:2.3:a:openbsd:openssh:6.8:p1:*:*:*:*:*:*
OpenBSD
openbsd
>>openssh>>9.9
cpe:2.3:a:openbsd:openssh:9.9:-:*:*:*:*:*:*
OpenBSD
openbsd
>>openssh>>9.9
cpe:2.3:a:openbsd:openssh:9.9:p1:*:*:*:*:*:*
NetApp, Inc.
netapp
>>active_iq_unified_manager>>-
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
NetApp, Inc.
netapp
>>ontap>>9
cpe:2.3:a:netapp:ontap:9:*:*:*:*:*:*:*
Red Hat, Inc.
redhat
>>openshift_container_platform>>4.0
cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>11.0
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>12.0
cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
Red Hat, Inc.
redhat
>>enterprise_linux>>9.0
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-390Secondarysecalert@redhat.com
CWE ID: CWE-390
Type: Secondary
Source: secalert@redhat.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://access.redhat.com/errata/RHSA-2025:16823secalert@redhat.com
N/A
https://access.redhat.com/errata/RHSA-2025:3837secalert@redhat.com
N/A
https://access.redhat.com/errata/RHSA-2025:6993secalert@redhat.com
N/A
https://access.redhat.com/errata/RHSA-2025:8385secalert@redhat.com
N/A
https://access.redhat.com/security/cve/CVE-2025-26465secalert@redhat.com
Third Party Advisory
https://access.redhat.com/solutions/7109879secalert@redhat.com
N/A
https://bugzilla.redhat.com/show_bug.cgi?id=2344780secalert@redhat.com
Issue Tracking
Third Party Advisory
https://seclists.org/oss-sec/2025/q1/144secalert@redhat.com
Mailing List
Third Party Advisory
http://seclists.org/fulldisclosure/2025/Feb/18af854a3a-2127-422b-91ae-364da2661108
N/A
http://seclists.org/fulldisclosure/2025/May/7af854a3a-2127-422b-91ae-364da2661108
N/A
http://seclists.org/fulldisclosure/2025/May/8af854a3a-2127-422b-91ae-364da2661108
N/A
https://blog.qualys.com/vulnerabilities-threat-research/2025/02/18/qualys-tru-discovers-two-vulnerabilities-in-openssh-cve-2025-26465-cve-2025-26466af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1237040af854a3a-2127-422b-91ae-364da2661108
Issue Tracking
https://ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/008_ssh.patch.sigaf854a3a-2127-422b-91ae-364da2661108
Patch
https://lists.debian.org/debian-lts-announce/2025/02/msg00020.htmlaf854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://lists.mindrot.org/pipermail/openssh-unix-announce/2025-February/000161.htmlaf854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2025-26465af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://security.netapp.com/advisory/ntap-20250228-0003/af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://ubuntu.com/security/CVE-2025-26465af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.openssh.com/releasenotes.html#9.9p2af854a3a-2127-422b-91ae-364da2661108
Release Notes
https://www.openwall.com/lists/oss-security/2025/02/18/1af854a3a-2127-422b-91ae-364da2661108
Mailing List
Third Party Advisory
https://www.openwall.com/lists/oss-security/2025/02/18/4af854a3a-2127-422b-91ae-364da2661108
Mailing List
Third Party Advisory
https://www.theregister.com/2025/02/18/openssh_vulnerabilities_mitm_dos/af854a3a-2127-422b-91ae-364da2661108
Press/Media Coverage
https://www.vicarius.io/vsociety/posts/cve-2025-26465-detect-vulnerable-opensshaf854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-26465-mitigate-vulnerable-opensshaf854a3a-2127-422b-91ae-364da2661108
Mitigation
Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
N/A
https://seclists.org/oss-sec/2025/q1/144134c704f-9b21-4f2e-91b3-4a467353bcc0
Mailing List
Third Party Advisory
Hyperlink: https://access.redhat.com/errata/RHSA-2025:16823
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2025:3837
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2025:6993
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/errata/RHSA-2025:8385
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://access.redhat.com/security/cve/CVE-2025-26465
Source: secalert@redhat.com
Resource:
Third Party Advisory
Hyperlink: https://access.redhat.com/solutions/7109879
Source: secalert@redhat.com
Resource: N/A
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2344780
Source: secalert@redhat.com
Resource:
Issue Tracking
Third Party Advisory
Hyperlink: https://seclists.org/oss-sec/2025/q1/144
Source: secalert@redhat.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: http://seclists.org/fulldisclosure/2025/Feb/18
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2025/May/7
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: http://seclists.org/fulldisclosure/2025/May/8
Source: af854a3a-2127-422b-91ae-364da2661108
Resource: N/A
Hyperlink: https://blog.qualys.com/vulnerabilities-threat-research/2025/02/18/qualys-tru-discovers-two-vulnerabilities-in-openssh-cve-2025-26465-cve-2025-26466
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://bugzilla.suse.com/show_bug.cgi?id=1237040
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Issue Tracking
Hyperlink: https://ftp.openbsd.org/pub/OpenBSD/patches/7.6/common/008_ssh.patch.sig
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Patch
Hyperlink: https://lists.debian.org/debian-lts-announce/2025/02/msg00020.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://lists.mindrot.org/pipermail/openssh-unix-announce/2025-February/000161.html
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://security-tracker.debian.org/tracker/CVE-2025-26465
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://security.netapp.com/advisory/ntap-20250228-0003/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://ubuntu.com/security/CVE-2025-26465
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://www.openssh.com/releasenotes.html#9.9p2
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Release Notes
Hyperlink: https://www.openwall.com/lists/oss-security/2025/02/18/1
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://www.openwall.com/lists/oss-security/2025/02/18/4
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://www.theregister.com/2025/02/18/openssh_vulnerabilities_mitm_dos/
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Press/Media Coverage
Hyperlink: https://www.vicarius.io/vsociety/posts/cve-2025-26465-detect-vulnerable-openssh
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Third Party Advisory
Hyperlink: https://www.vicarius.io/vsociety/posts/cve-2025-26465-mitigate-vulnerable-openssh
Source: af854a3a-2127-422b-91ae-364da2661108
Resource:
Mitigation
Third Party Advisory
Hyperlink: https://cert-portal.siemens.com/productcert/html/ssa-082556.html
Source: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Resource: N/A
Hyperlink: https://seclists.org/oss-sec/2025/q1/144
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Mailing List
Third Party Advisory

Change History

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Similar CVEs

13Records found

CVE-2019-6109
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-6.8||MEDIUM
EPSS-9.74% / 93.09%
||
7 Day CHG~0.00%
Published-31 Jan, 2019 | 00:00
Updated-28 May, 2026 | 19:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client output, e.g., by using ANSI control codes to hide additional files being transferred. This affects refresh_progress_meter() in progressmeter.c.

Action-Not Available
Vendor-winscpn/aNetApp, Inc.Siemens AGOpenBSDRed Hat, Inc.Canonical Ltd.Fujitsu LimitedDebian GNU/LinuxFedora Project
Product-winscpm12-2s_firmwareenterprise_linux_server_ausm12-1_firmwarescalance_x204rna_eecm10-4enterprise_linuxdebian_linuxm10-1m12-2sscalance_x204rnaelement_softwareubuntu_linuxm10-4s_firmwarestorage_automation_storeenterprise_linux_eusscalance_x204rna_firmwarem10-4_firmwareontap_select_deploym12-1m12-2enterprise_linux_server_tusm10-1_firmwarem12-2_firmwarem10-4sopensshfedorascalance_x204rna_eec_firmwaren/a
CWE ID-CWE-116
Improper Encoding or Escaping of Output
CVE-2026-37982
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.02% / 4.42%
||
7 Day CHG~0.00%
Published-19 May, 2026 | 10:52
Updated-03 Jun, 2026 | 19:53
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Keycloak: org.keycloak.authentication: keycloak: unauthorized account takeover via webauthn token replay

A flaw was found in Keycloak. This authentication vulnerability allows a remote attacker to replay `ExecuteActionsActionToken` tokens within Keycloak's WebAuthn (Web Authentication) flow. By intercepting an execute-actions email link, an attacker can register their own authenticator to a victim's account. This leads to unauthorized enrollment of a hardware-backed credential, enabling persistent account takeover.

Action-Not Available
Vendor-Red Hat, Inc.
Product-build_of_keycloakRed Hat build of Keycloak 26.4.12Red Hat build of Keycloak 26.4
CWE ID-CWE-294
Authentication Bypass by Capture-replay
CVE-2023-36748
Matching Score-8
Assigner-Siemens
ShareView Details
Matching Score-8
Assigner-Siemens
CVSS Score-5.9||MEDIUM
EPSS-0.07% / 20.29%
||
7 Day CHG~0.00%
Published-11 Jul, 2023 | 09:07
Updated-27 Nov, 2024 | 14:16
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability has been identified in RUGGEDCOM ROX MX5000 (All versions < V2.16.0), RUGGEDCOM ROX MX5000RE (All versions < V2.16.0), RUGGEDCOM ROX RX1400 (All versions < V2.16.0), RUGGEDCOM ROX RX1500 (All versions < V2.16.0), RUGGEDCOM ROX RX1501 (All versions < V2.16.0), RUGGEDCOM ROX RX1510 (All versions < V2.16.0), RUGGEDCOM ROX RX1511 (All versions < V2.16.0), RUGGEDCOM ROX RX1512 (All versions < V2.16.0), RUGGEDCOM ROX RX1524 (All versions < V2.16.0), RUGGEDCOM ROX RX1536 (All versions < V2.16.0), RUGGEDCOM ROX RX5000 (All versions < V2.16.0). The affected devices are configured to offer weak ciphers by default. This could allow an unauthorized attacker in a man-in-the-middle position to read and modify any data passed over to and from the affected device.

Action-Not Available
Vendor-Siemens AG
Product-ruggedcom_rox_mx5000reruggedcom_rox_rx1511ruggedcom_rox_rx1512_firmwareruggedcom_rox_rx1512ruggedcom_rox_mx5000_firmwareruggedcom_rox_rx1511_firmwareruggedcom_rox_rx1510ruggedcom_rox_rx1400_firmwareruggedcom_rox_rx1400ruggedcom_rox_rx1510_firmwareruggedcom_rox_rx1500ruggedcom_rox_rx1524_firmwareruggedcom_rox_rx5000ruggedcom_rox_rx1501ruggedcom_rox_rx1536ruggedcom_rox_mx5000ruggedcom_rox_rx1536_firmwareruggedcom_rox_rx1524ruggedcom_rox_rx1500_firmwareruggedcom_rox_mx5000re_firmwareruggedcom_rox_rx1501_firmwareruggedcom_rox_rx5000_firmwareRUGGEDCOM ROX MX5000RERUGGEDCOM ROX RX1511RUGGEDCOM ROX RX1536RUGGEDCOM ROX RX1400RUGGEDCOM ROX RX1501RUGGEDCOM ROX RX1500RUGGEDCOM ROX RX5000RUGGEDCOM ROX MX5000RUGGEDCOM ROX RX1524RUGGEDCOM ROX RX1510RUGGEDCOM ROX RX1512
CWE ID-CWE-326
Inadequate Encryption Strength
CVE-2025-46421
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.31% / 54.45%
||
7 Day CHG-0.30%
Published-24 Apr, 2025 | 13:01
Updated-15 Apr, 2026 | 00:35
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Libsoup: information disclosure may leads libsoup client sends authorization header to a different host when being redirected by a server

A flaw was found in libsoup. When libsoup clients encounter an HTTP redirect, they mistakenly send the HTTP Authorization header to the new host that the redirection points to. This allows the new host to impersonate the user to the original host that issued the redirect.

Action-Not Available
Vendor-Red Hat, Inc.
Product-Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceRed Hat Enterprise Linux 8Red Hat Enterprise Linux 10Red Hat Enterprise Linux 8.8 Extended Update SupportRed Hat Enterprise Linux 9.4 Extended Update SupportRed Hat Enterprise Linux 8.4 Telecommunications Update ServiceRed Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.4 Update Services for SAP SolutionsRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRed Hat Enterprise Linux 8.2 Advanced Update SupportRed Hat Enterprise Linux 8.6 Update Services for SAP SolutionsRed Hat Enterprise Linux 9.2 Extended Update SupportRed Hat Enterprise Linux 7Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions
CWE ID-CWE-497
Exposure of Sensitive System Information to an Unauthorized Control Sphere
CVE-2022-25763
Matching Score-8
Assigner-Apache Software Foundation
ShareView Details
Matching Score-8
Assigner-Apache Software Foundation
CVSS Score-6.8||MEDIUM
EPSS-1.09% / 78.27%
||
7 Day CHG+0.77%
Published-10 Aug, 2022 | 05:50
Updated-20 Oct, 2025 | 18:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Improper input validation on HTTP/2 headers

Improper Input Validation vulnerability in HTTP/2 request validation of Apache Traffic Server allows an attacker to create smuggle or cache poison attacks. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Action-Not Available
Vendor-Fedora ProjectDebian GNU/LinuxThe Apache Software Foundation
Product-fedoradebian_linuxtraffic_serverApache Traffic Server
CWE ID-CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
CVE-2009-4139
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.10% / 28.03%
||
7 Day CHG~0.00%
Published-27 Jul, 2011 | 01:29
Updated-29 Apr, 2026 | 01:13
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Spacewalk-java: spacewalk: red hat network satellite: spacewalk java: privilege escalation via cross-site request forgery

A flaw was found in Spacewalk Java site packages. This cross-site request forgery (CSRF) vulnerability allows a remote attacker to hijack the authentication of arbitrary users. This can lead to unauthorized actions, including disabling user accounts, adding new user accounts, or escalating privileges by modifying existing user accounts to have administrator access.

Action-Not Available
Vendor-Red Hat, Inc.
Product-spacewalk-javanetwork_satellite_serverRed Hat Enterprise Linux 6Red Hat Enterprise Linux 7
CWE ID-CWE-346
Origin Validation Error
CWE ID-CWE-352
Cross-Site Request Forgery (CSRF)
CVE-2017-10274
Matching Score-8
Assigner-Oracle
ShareView Details
Matching Score-8
Assigner-Oracle
CVSS Score-6.8||MEDIUM
EPSS-0.67% / 71.64%
||
7 Day CHG~0.00%
Published-19 Oct, 2017 | 17:00
Updated-13 May, 2026 | 00:24
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

Vulnerability in the Java SE component of Oracle Java SE (subcomponent: Smart Card IO). Supported versions that are affected are Java SE: 6u161, 7u151, 8u144 and 9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE accessible data as well as unauthorized access to critical data or complete access to all Java SE accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVSS 3.0 Base Score 6.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N).

Action-Not Available
Vendor-Oracle CorporationRed Hat, Inc.Debian GNU/LinuxNetApp, Inc.
Product-e-series_santricity_management_plug-insdebian_linuxjreenterprise_linux_server_tusoncommand_performance_managerenterprise_linux_desktopstorage_replication_adapter_for_clustered_data_ontaponcommand_balancevasa_provider_for_clustered_data_ontapenterprise_linux_server_ausoncommand_unified_manageroncommand_insightplug-in_for_symantec_netbackupsteelstore_cloud_integrated_storagecloud_backupactive_iq_unified_managersnapmanageroncommand_workflow_automationjdkenterprise_linux_serverenterprise_linux_workstationoncommand_shiftvirtual_storage_consolee-series_santricity_storage_managerenterprise_linux_euse-series_santricity_web_servicese-series_santricity_os_controllerelement_softwareJava
CVE-2020-1759
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-6.4||MEDIUM
EPSS-0.41% / 61.60%
||
7 Day CHG~0.00%
Published-13 Apr, 2020 | 12:04
Updated-04 Aug, 2024 | 06:46
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2 where, A nonce reuse vulnerability was discovered in the secure mode of the messenger v2 protocol, which can allow an attacker to forge auth tags and potentially manipulate the data by leveraging the reuse of a nonce in a session. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks.

Action-Not Available
Vendor-The Ceph ProjectRed Hat, Inc.Fedora ProjectThe Linux Foundation
Product-ceph_storageopenshiftopenstackfedoracephceph
CWE ID-CWE-323
Reusing a Nonce, Key Pair in Encryption
CWE ID-CWE-330
Use of Insufficiently Random Values
CVE-2026-9802
Matching Score-8
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-8
Assigner-Red Hat, Inc.
CVSS Score-6.8||MEDIUM
EPSS-0.04% / 13.34%
||
7 Day CHG-0.01%
Published-28 May, 2026 | 04:47
Updated-03 Jun, 2026 | 19:36
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Keycloak: keycloak: unauthorized account access via replayed refresh tokens after cluster restart

A flaw was found in Keycloak. When revokeRefreshToken=true is enabled and persistent session storage is in use, a server restart can reset internal timing mechanisms. This allows a remote attacker, who has previously captured a user's refresh token, to replay that token even after it has been revoked. Successful exploitation grants the attacker unauthorized access to the victim's account, potentially leading to information disclosure or privilege escalation.

Action-Not Available
Vendor-Red Hat, Inc.
Product-build_of_keycloakRed Hat Build of Keycloak
CWE ID-CWE-613
Insufficient Session Expiration
CVE-2019-6110
Matching Score-8
Assigner-MITRE Corporation
ShareView Details
Matching Score-8
Assigner-MITRE Corporation
CVSS Score-6.8||MEDIUM
EPSS-57.57% / 98.20%
||
7 Day CHG~0.00%
Published-31 Jan, 2019 | 00:00
Updated-18 Dec, 2025 | 15:15
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

Action-Not Available
Vendor-winscpn/aOpenBSDSiemens AGNetApp, Inc.
Product-opensshwinscpstorage_automation_storescalance_x204rna_eec_firmwareontap_select_deployscalance_x204rna_eecscalance_x204rnaelement_softwarescalance_x204rna_firmwaren/a
CWE ID-CWE-838
Inappropriate Encoding for Output Context
CVE-2019-5051
Matching Score-6
Assigner-Talos
ShareView Details
Matching Score-6
Assigner-Talos
CVSS Score-8.8||HIGH
EPSS-1.38% / 80.62%
||
7 Day CHG-0.18%
Published-03 Jul, 2019 | 18:43
Updated-04 Aug, 2024 | 19:47
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An exploitable heap-based buffer overflow vulnerability exists when loading a PCX file in SDL2_image, version 2.0.4. A missing error handler can lead to a buffer overflow and potential code execution. An attacker can provide a specially crafted image file to trigger this vulnerability.

Action-Not Available
Vendor-libsdln/aCanonical Ltd.openSUSEDebian GNU/Linux
Product-ubuntu_linuxsdl2_imagedebian_linuxbackports_sleleapSimple DirectMedia
CWE ID-CWE-390
Detection of Error Condition Without Action
CWE ID-CWE-787
Out-of-bounds Write
CWE ID-CWE-755
Improper Handling of Exceptional Conditions
CVE-2024-12086
Matching Score-6
Assigner-Red Hat, Inc.
ShareView Details
Matching Score-6
Assigner-Red Hat, Inc.
CVSS Score-6.1||MEDIUM
EPSS-1.91% / 83.64%
||
7 Day CHG-0.11%
Published-14 Jan, 2025 | 17:37
Updated-26 May, 2026 | 05:40
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available
Rsync: rsync server leaks arbitrary client files

A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.

Action-Not Available
Vendor-archlinuxnixostritondatacenteralmalinuxSambaSUSERed Hat, Inc.Gentoo Foundation, Inc.
Product-almalinuxsmartosnixossuse_linuxlinuxenterprise_linuxopenshift_container_platformarch_linuxrsyncRed Hat Enterprise Linux 8Red Hat Enterprise Linux 7Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat Enterprise Linux 10Red Hat Enterprise Linux 6Red Hat Enterprise Linux 9Red Hat OpenShift Container Platform 4
CWE ID-CWE-390
Detection of Error Condition Without Action
CVE-2021-40391
Matching Score-6
Assigner-Talos
ShareView Details
Matching Score-6
Assigner-Talos
CVSS Score-10||CRITICAL
EPSS-0.47% / 65.07%
||
7 Day CHG~0.00%
Published-19 Nov, 2021 | 18:53
Updated-04 Aug, 2024 | 02:44
Rejected-Not Available
Known To Be Used In Ransomware Campaigns?-Not Available
KEV Added-Not Available
KEV Action Due Date-Not Available

An out-of-bounds write vulnerability exists in the drill format T-code tool number functionality of Gerbv 2.7.0, dev (commit b5f1eacd), and the forked version of Gerbv (commit 71493260). A specially-crafted drill file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.

Action-Not Available
Vendor-gerbv_projectn/aDebian GNU/LinuxFedora Project
Product-debian_linuxfedoragerbvGerbv
CWE ID-CWE-390
Detection of Error Condition Without Action
CWE ID-CWE-787
Out-of-bounds Write
CWE ID-CWE-755
Improper Handling of Exceptional Conditions
Details not found