by Kastro
Paper/Archive/CVE-2026-57228

CVE-2026-57228

OISF suricata — Suricata smtp/mime: heap out-of-bounds read quoted-printable decoder

EPSS 0.4%CVSS 9.1
critical.is priorityof 100
35
CVSS 9.1 (NVD)9.1 / 10 × 3027.3Not in CISA KEV+300.0EPSS percentile 36.6.366 × 207.3No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME quoted-printable decoder in src/util-decode-mime.c can read one byte past a heap buffer when a quoted-printable escape sequence is split across traffic chunks and the following chunk contains exactly one byte. Crafted SMTP traffic can trigger the out-of-bounds read and crash Suricata when decode-quoted-printable MIME decoding is enabled. This issue is fixed in version 7.0.17.

Affected

ProductAffectedFixed inSource
suricata>= 7.0.13, < 7.0.17–CNA

Scores by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
GitHub_M (CNA)8.2CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4refgithub.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86refgithub.com/OISF/suricata/releases/tag/suricata-7.0.17refredmine.openinfosecfoundation.org/issues/8608