CVE-2025-1218

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.

  • Published Sep 25, 2026
  • CVSS 3.4 low
  • 0.2% chance of exploitation in the next 30 days (EPSS)

Affected software

In the news

CVE-2025-1218 at the National Vulnerability Database