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CVE Vulnerability Details :
CVE-2026-37459
PUBLISHED
More InfoOfficial Page
Assigner-mitre
Assigner Org ID-8254265b-2729-46b6-b9e3-3dfca2d5bfca
View Known Exploited Vulnerability (KEV) details
Published At-04 May, 2026 | 00:00
Updated At-30 Jun, 2026 | 03:17
Rejected At-
▼CVE Numbering Authority (CNA)

An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.

Affected Products
Vendor
n/a
Product
n/a
Versions
Affected
  • n/a
Problem Types
TypeCWE IDDescription
textN/An/a
Type: text
CWE ID: N/A
Description: n/a
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9
N/A
Hyperlink: https://github.com/FRRouting/frr/commit/693a2e02687cdc9d16501275e05136edea9650d9
Resource: N/A
▼Authorized Data Publishers (ADP)
1. CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-400CWE-400 Uncontrolled Resource Consumption
Type: CWE
CWE ID: CWE-400
Description: CWE-400 Uncontrolled Resource Consumption
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
2. frr: denial of service via crafted BGP UPDATE message

A flaw was found in FRRouting (FRR). An unauthenticated remote attacker can exploit an integer underflow vulnerability by supplying a specially crafted BGP (Border Gateway Protocol) UPDATE message. This issue can lead to a Denial of Service (DoS).

Affected Products
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AppStream (v. 10)
CPEs
  • cpe:/o:redhat:enterprise_linux:10.2
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux AppStream (v. 9)
CPEs
  • cpe:/a:redhat:enterprise_linux:9::appstream
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 8
CPEs
  • cpe:/o:redhat:enterprise_linux:8
Default Status
affected
Vendor
Red Hat, Inc.Red Hat
Product
Red Hat Enterprise Linux 9
CPEs
  • cpe:/o:redhat:enterprise_linux:9
Default Status
affected
Problem Types
TypeCWE IDDescription
CWECWE-191Integer Underflow (Wrap or Wraparound)
Type: CWE
CWE ID: CWE-191
Description: Integer Underflow (Wrap or Wraparound)
Metrics
VersionBase scoreBase severityVector
3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Red Hat severity rating
value:
Important
namespace:
https://access.redhat.com/security/updates/classification/
Impacts
CAPEC IDDescription
Solutions

RHSA-2026:24347: Red Hat Enterprise Linux AppStream (v. 10)

RHSA-2026:24370: Red Hat Enterprise Linux AppStream (v. 9)

Configurations
Workarounds

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

Exploits
Credits
Timeline
EventDate
Reported to Red Hat.2026-05-04 19:02:45
Made public.2026-05-04 00:00:00
Event: Reported to Red Hat.
Date: 2026-05-04 19:02:45
Event: Made public.
Date: 2026-05-04 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://access.redhat.com/security/cve/CVE-2026-37459
vdb-entry
x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2466513
issue-tracking
x_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json
x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:24347
vendor-advisory
x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:24370
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/security/cve/CVE-2026-37459
Resource:
vdb-entry
x_refsource_REDHAT
Hyperlink: https://bugzilla.redhat.com/show_bug.cgi?id=2466513
Resource:
issue-tracking
x_refsource_REDHAT
Hyperlink: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-37459.json
Resource:
x_sadp-csaf-vex
Hyperlink: https://access.redhat.com/errata/RHSA-2026:24347
Resource:
vendor-advisory
x_refsource_REDHAT
Hyperlink: https://access.redhat.com/errata/RHSA-2026:24370
Resource:
vendor-advisory
x_refsource_REDHAT
Details not found