CVE-2026-57228
Suricata smtp/mime: heap out-of-bounds read quoted-printable decoder
CVSS Score
8.2
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-125 |
| Vendor | oisf |
| Product | suricata |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
OISF / suricata
>= 7.0.13, < 7.0.17
References
github.com: https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4 github.com: https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86 github.com: https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 redmine.openinfosecfoundation.org: https://redmine.openinfosecfoundation.org/issues/8608