Leak partial content of the heap through heap buffer over-read in mysqlnd

Description

In PHP versions 8.1.* before 8.1.31, 8.2.* before 8.2.26, 8.3.* before 8.3.14, a hostile MySQL server can cause the client to disclose the content of its heap containing data from other SQL requests and possible other data belonging to different users of the same server.

Scores

EPSS (exploitation in 30 days)

2.2% · top 17% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.

Weakness

• CWE-200 Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)All about CWE-200 and its CVEs
• CWE-125 Out-of-bounds Read (opens in a new tab)All about CWE-125 and its CVEs

Affected products

• PHP Group · PHP

  • affected 8.1.* – < 8.1.31
  • affected 8.2.* – < 8.2.24
  • affected 8.3.* – < 8.3.14

References (3)

• https://github.com/php/php-src/security/advisories/GHSA-h35g-vwh6-m678 (opens in a new tab)
• https://security.netapp.com/advisory/ntap-20250110-0008/ (opens in a new tab)
• https://lists.debian.org/debian-lts-announce/2024/12/msg00007.html (opens in a new tab)

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2024-8929](https://trackcve.app/badge/CVE-2024-8929.svg)](https://trackcve.app/cve/CVE-2024-8929)

Record last updated 3 Nov 2025, 22:33 UTC.