CVE-2025-61912

python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to 3.4.5, ldap.dn.escape_dn_chars() escapes \x00 incorrectly by emitting a backslash followed by a literal NUL byte instead of the RFC-4514 hex form \00. Any application that uses this helper to construct DNs from untrusted input can be made to consistently fail before a request is sent to the LDAP server (e.g., AD), resulting in a client-side denial of service. Version 3.4.5 contains a patch for the issue.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f	Patch
https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5	Release Notes
https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:python-ldap:python-ldap:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2025-10-10 22:15

Updated : 2025-12-04 17:57

NVD link : CVE-2025-61912

Mitre link : CVE-2025-61912

CVE.ORG link : CVE-2025-61912

JSON object : View

Products Affected

python-ldap

python-ldap

CWE

CWE-116

Improper Encoding or Escaping of Output

CWE-170

Improper Null Termination

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