Red Hat Security Advisory

RHSA-2026:51034

postfix security update

Released 2026-08-06 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux BaseOS AUS (v.8.4) postfix-2:3.5.8-1.el8_4.1
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) postfix-2:3.5.8-1.el8_4.1

Fixes 1 record

TI-2026-32009 CVE-2026-43964 · GHSA-c4gx-p7gq-g6hp

Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a…

LOW 33

Postfix before 3.8.16, 3.9 before 3.9.10, and 3.10 before 3.10.9 sometimes allows a buffer over-read and process crash via an enhanced status code that lacks text after the third number.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00511 Published 2026-05-04 Partial fix · 3.8.16, 3.9.10 +1 CWE-193