Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Python-Ldap | Python-Ldap | < 3.4.5 |
Related Weaknesses (CWE)
References
- https://github.com/python-ldap/python-ldap/commit/6ea80326a34ee6093219628d7690bcPatch
- https://github.com/python-ldap/python-ldap/releases/tag/python-ldap-3.4.5Release Notes
- https://github.com/python-ldap/python-ldap/security/advisories/GHSA-p34h-wq7j-h5ExploitThird Party Advisory
FAQ
What is CVE-2025-61912?
CVE-2025-61912 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 ...
How severe is CVE-2025-61912?
CVE-2025-61912 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-61912?
Check the references section above for vendor advisories and patch information. Affected products include: Python-Ldap Python-Ldap.