CVE-2026-43964

Name of the Vulnerable Software and Affected Versions Postfix versions prior to 3.8.16 Postfix versions 3.9 prior to 3.9.10 Postfix versions 3.10 prior to 3.10.9

Description A buffer over-read can occur, potentially leading to a process crash, when an enhanced status code is used that lacks text after the third number.

Recommendations Update to version 3.8.16 or later. Update to version 3.9.10 or later. Update to version 3.10.9 or later.