CVE-2026-57228
High
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.
SeverityHigh
CVSS8.2
Exploit probability—
ProductOisf Suricata
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- oisf suricata7.0.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| oisf suricata | 7.0.13 ≤ v < 7.0.17 | 7.0.17 |
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