CVE-2025-61912

Description

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.

Risk Information

Base Score

5.3

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Score

Exploitation Probability

0.139

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2025-61911,CVE-2025-61912 are fixed in Python-python-ldap 3.4.5	Windows
Vulnerabilities CVE-2025-61911,CVE-2025-61912 are fixed in Python-python-ldap for linux 3.4.5	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234