Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-57228

CVE-2026-57228CRITICAL

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

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  N  H    9.1   .0042   34.3     —

AFFECTED
  Product   Versions               Fixed
  suricata  >= 7.0.13, < 7.0.17 –  —

TIMELINE
  Jun 24  Reserved by GitHub_M
  Sep 18  Published (CNA: GitHub_M)
  Sep 29  EXPLOIT PUBLISHED — CVE-2026-57228 (OISF suricata). Public exploit reference added.
  Sep 29  RESCORED — CVE-2026-57228 (OISF suricata). CVSS 8.2 → 9.1 (NVD).

CWE-125 · CNA: GitHub_M · CVSS v3.1 · 4 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
June 24, 2026	Reserved	Reserved by GitHub_M
September 18, 2026	Published	Published (CNA: GitHub_M)
September 29, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-57228 (OISF suricata). Public exploit reference added.
September 29, 2026	RESCORED	RESCORED — CVE-2026-57228 (OISF suricata). CVSS 8.2 → 9.1 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OISF	suricata	—	>= 7.0.13, < 7.0.17	—

Weaknesses

CWE-125

References (4)

https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86 [Patch]
https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 [Release Notes]
https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4 [Mitigation, Vendor Advisory]
https://redmine.openinfosecfoundation.org/issues/8608 [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-57228 at cve.org

Vendors: oisf

Weaknesses: CWE-125

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-57228 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.