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CVE-2026-57228

9.1, critical

OISF suricata Out-of-Bounds Read Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.1, critical critical CVSS v3.1
EPSS, next 30 days
0.4% higher than 35.1% of scored CVEs
Exploitation
Exploit code published
Published
18 Sept 202629 days ago

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.

Details

Vendor
OISF
Product
suricata
Weakness
CWE-125 (opens in a new tab)
Status
Analyzed
Updated
29 Sept 2026
Assigner
security-advisories@github.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

References 4

Exploit code 1

Patches and fixes 1

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other OISF CVEs

Every OISF CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-63448 OISF suricata Uncontrolled Resource Consumption Vulnerability EPSS 0.4% 7.5, high
  • CVE-2026-71855 Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine EPSS 0.3% 7.5, high
  • CVE-2026-45751 OISF suricata Use-After-Free Vulnerability EPSS 0.3% 7.5, high

Beyond this page

Is CVE-2026-57228 in your network?

This page tells you how dangerous CVE-2026-57228 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Find it before attackers do

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.