Description
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.
Metrics
CVSS 3.1 9.1/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| OISF | suricata | >= 7.0.13, < 7.0.17 |
References
- https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86Patch
- https://github.com/OISF/suricata/releases/tag/suricata-7.0.17Release Notes
- https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4Mitigation, Vendor Advisory
- https://redmine.openinfosecfoundation.org/issues/8608Exploit, Vendor Advisory
Timeline
- Published
- Sep 18, 2026
- Last modified
- Sep 29, 2026
- NVD status
- Analyzed