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Vulnerability Details :

CVE-2026-33262

Summary
Assigner-OX
Assigner Org ID-8ce71d90-2354-404b-a86e-bec2cc4e6981
Published At-22 Apr, 2026 | 09:40
Updated At-22 Apr, 2026 | 18:09
Rejected At-
Credits

Insufficient validation of cookie reply

An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.

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)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:OX
Assigner Org ID:8ce71d90-2354-404b-a86e-bec2cc4e6981
Published At:22 Apr, 2026 | 09:40
Updated At:22 Apr, 2026 | 18:09
Rejected At:
▼CVE Numbering Authority (CNA)
Insufficient validation of cookie reply

An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.

Affected Products
Vendor
PowerDNS
Product
Recursor
Collection URL
https://repo.powerdns.com/
Package Name
pdns-recursor
Repo
https://github.com/PowerDNS/pdns
Modules
  • Outgoing cookies
Program Files
  • lwres.cc
Default Status
unaffected
Versions
Affected
  • From 5.4.0 before 5.4.1 (semver)
  • From 5.3.0 before 5.3.6 (semver)
  • From 5.2.0 before 5.2.9 (semver)
Problem Types
TypeCWE IDDescription
CWENULLNULL Pointer Dereference
Type: CWE
CWE ID: NULL
Description: NULL Pointer Dereference
Metrics
VersionBase scoreBase severityVector
3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
ylwango613
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
N/A
Hyperlink: https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-476CWE-476 NULL Pointer Dereference
Type: CWE
CWE ID: CWE-476
Description: CWE-476 NULL Pointer Dereference
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security@open-xchange.com
Published At:22 Apr, 2026 | 10:16
Updated At:27 Apr, 2026 | 17:02

An attacker can send replies that result in a null pointer dereference, caused by a missing consistency check and leading to a denial of service. Cookies are disabled by default.

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
Secondary3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary3.15.9MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Secondary
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Type: Primary
Version: 3.1
Base score: 5.9
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CPE Matches
powerdns
powerdns
>>recursor>>Versions from 5.2.0(inclusive) to 5.2.9(exclusive)
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns
powerdns
>>recursor>>Versions from 5.3.0(inclusive) to 5.3.6(exclusive)
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns
powerdns
>>recursor>>5.4.0
cpe:2.3:a:powerdns:recursor:5.4.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-476Secondary134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE ID: CWE-476
Type: Secondary
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.htmlsecurity@open-xchange.com
Vendor Advisory
Broken Link
Hyperlink: https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
Source: security@open-xchange.com
Resource:
Vendor Advisory
Broken Link

Change History

0
Information is not available yet

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