CVE-2026-57228
Suricata smtp/mime: heap out-of-bounds read quoted-printable decoder
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.
INFO
Published Date :
Sept. 18, 2026, 9:17 p.m.
Last Modified :
Sept. 29, 2026, 12:47 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Suricata to version 7.0.17.
- Ensure MIME decoding is configured correctly.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-57228.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-57228 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-57228
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-57228 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-57228 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Added CPE Configuration OR *cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:* versions from (including) 7.0.13 up to (excluding) 7.0.17 Added Reference Type GitHub, Inc.: https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86 Types: Patch Added Reference Type GitHub, Inc.: https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 Types: Release Notes Added Reference Type GitHub, Inc.: https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4 Types: Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://redmine.openinfosecfoundation.org/issues/8608 Types: Exploit, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 21, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-57228', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-09-21T19:48:41.391355Z'} -
New CVE Received by [email protected]
Sep. 18, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Added CWE CWE-125 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/57xxx/CVE-2026-57228.json">CVE-2026-57228</a> Added Reference https://github.com/OISF/suricata/commit/19880f9d5bbe2b8f8e8867a577848dce2b532c86 Added Reference https://github.com/OISF/suricata/releases/tag/suricata-7.0.17 Added Reference https://github.com/OISF/suricata/security/advisories/GHSA-qxm4-q7vx-7xj4 Added Reference https://redmine.openinfosecfoundation.org/issues/8608