CVE-2026-57228

HIGHPre-NVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.2 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 55% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.2EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.2Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.2
EG Score
8.2(medium)
EG Risk
52(Track)
EG Risk 52/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity82% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
45%
KEV
Not listed

Published

September 18, 2026

Last Modified

September 23, 2026

Advisory Details (4)

Auto-updated Sep 18, 2026
Patch available. Sources: github_release, github, github_commit.
generic

Security #8608: mime: buffer over read in quoted printable decoding - Suricata - Open Information Security Foundation

https://redmine.openinfosecfoundation.org/issues/8608
github_release Patch Available

7.0.17

Patch available: OISF/suricata suricata-7.0.17

https://github.com/OISF/suricata/releases/tag/suricata-7.0.17
github_commit Patch Available

commit 19880f9d5bbe (OISF/suricata)

Patch available: OISF/suricata suricata-7.0.17 (contains commit 19880f9d5bbe)

https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86
github Patch Available

smtp/mime: heap out-of-bounds read quoted-printable decoder · Advisory · OISF/suricata · GitHub

https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-24 19:12 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 18:27 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 22:11 UTCEG score recompute
  6. 2026-09-21 21:24 UTCEG score recompute
  7. 2026-09-21 20:58 UTCEG score recompute
  8. 2026-09-20 22:49 UTCEG score recompute
  9. 2026-09-20 20:16 UTCEPSS rescore
  10. 2026-09-19 22:04 UTCEG score recompute
  11. 2026-09-18 21:17 UTCEG score recompute
  12. 2026-09-18 20:25 UTCEG score recompute
  13. 2026-09-18 20:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-57228?
CVE-2026-57228 is a high vulnerability published on September 18, 2026. 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…
When was CVE-2026-57228 disclosed?
CVE-2026-57228 was first published in the National Vulnerability Database on September 18, 2026, with the most recent update on September 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-57228 actively exploited?
CVE-2026-57228 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 55.3% of all scored CVEs.
What is the CVSS score of CVE-2026-57228?
CVE-2026-57228 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-57228?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-57228, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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