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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.

PUBLISHED Reserved 2026-05-04 | Published 2026-05-04 | Updated 2026-05-04 | Assigner mitre




LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-193 Off-by-one Error

Product status

Default status
unaffected

2.3 (custom) before 3.8.16
affected

3.9 (custom) before 3.9.10
affected

3.10 (custom) before 3.10.9
affected

References

www.openwall.com/lists/oss-security/2026/05/04/30

www.mail-archive.com/...x-announce@postfix.org/msg00110.html

cve.org (CVE-2026-43964)

nvd.nist.gov (CVE-2026-43964)

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