CVE-2026-43964

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CVSS 3.1

7.5 high

EPSS

<1%p42

Published

May 4, 2026 (May 4, 2026)

Modified

Aug 20, 2026

Description

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.

Vendors: postfix
Products: postfix
Weakness: CWE-193
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.5%)

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