CVE-2025-61912
python-ldap Vulnerable to Improper Encoding or Escaping of Output and Improper Null Termination
MEDIUM 5.5EPSS 0.5%
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.
- Affected
- python-ldap
- CVSS v4.0 GITHUB
- 5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v4.0 GitHub
- 5.5 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P - CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L - EPSS
- 0.46% chance of exploitation in the next 30 days, 38th percentile
- Published
- 2025-10-10
- Updated
- 2025-10-14
Proof-of-concept exploits (1)
Security advisories
- python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5v6
- python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bced50c49a3f