CVE-2026-43964

Name
CVE-2026-43964
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.
NVD Severity
unknown
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
cve@mitre.org https://www.mail-archive.com/postfix-announce@postfix.org/msg00110.html
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2026/05/04/30
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:25930
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:25932
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:26205
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/security/cve/CVE-2026-43964
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://bugzilla.redhat.com/show_bug.cgi?id=2466488
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43964.json
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:50963
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:50964
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:51034
0b0ca135-0b70-47e7-9f44-1890c2a1c46c https://access.redhat.com/errata/RHSA-2026:51436

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:postfix:postfix:*:*:*:*:*:*:*:* postfix >= None < 3.8.16
cpe:2.3:a:postfix:postfix:*:*:*:*:*:*:*:* postfix >= 3.9.0 < 3.9.10
cpe:2.3:a:postfix:postfix:*:*:*:*:*:*:*:* postfix >= 3.10.0 < 3.10.9

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
postfix edge-main 3.10.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.7-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.1-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.10.0-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.9.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix edge-main 3.9.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.23-main 3.10.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.23-main 3.10.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.22-main 3.10.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.4-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.21-main 3.9.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.5-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.3-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.2-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.1-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.20-main 3.9.0-r1 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.13-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.12-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.11-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.9-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.8-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.7-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable
postfix 3.19-main 3.8.6-r0 Natanael Copa <ncopa@alpinelinux.org> possibly vulnerable