The mysqlnd wire protocol parser reads fields out of server packets before checking that the packet still holds enough bytes for them. A malicious or compromised MySQL server can send a truncated packet and make the client read past the end of the packet buffer, which is undefined behaviour and can crash the process.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-6514-1 php8.4 security update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 26 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125
References
Metrics threat_severity

None

threat_severity

Low


Fri, 25 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
Description The mysqlnd wire protocol parser reads fields out of server packets before checking that the packet still holds enough bytes for them. A malicious or compromised MySQL server can send a truncated packet and make the client read past the end of the packet buffer, which is undefined behaviour and can crash the process.
Title Various packet overreads in mysqlnd_writeprotocol.c
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 3.4, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: php

Published:

Updated: 2026-09-25T20:48:21.777Z

Reserved: 2025-02-11T04:49:52.603Z

Link: CVE-2025-1218

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-25T21:17:20.993

Modified: 2026-09-25T21:17:20.993

Link: CVE-2025-1218

cve-icon Redhat

Severity : Low

Publid Date: 2026-09-25T20:48:21Z

Links: CVE-2025-1218 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-26T01:30:13Z

Weaknesses