CVE-2026-43964

EUVD-2026-27115
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
3.7 LOW
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 23%
Affected Products (NVD)
VendorProductVersion
postfixpostfix
𝑥
< 3.8.16
postfixpostfix
3.9.0 ≤
𝑥
< 3.9.10
postfixpostfix
3.10.0 ≤
𝑥
< 3.10.9
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
postfix
bookworm
no-dsa
bullseye
postponed
forky
3.11.4-1
fixed
sid
3.11.4-1
fixed
trixie
no-dsa
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
postfix
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-cdb
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-ldap
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-lmdb
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-mysql
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-pcre
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-perl-scripts
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-pgsql
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed
postfix-sqlite
RHEL 8
2:3.5.8-8.el8_10
fixed
RHEL 9
2:3.5.25-3.el9_8
fixed