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Vulnerabilities

Vulnerability · 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.

Published Sep 25, 2026 · catalog updated Oct 14, 2026 · The mysqlnd wire protocol

Check if you run it

No confirmed exploitation is on record for CVE-2025-1218. EPSS is 0.18%. Act only if a listed version of The mysqlnd wire protocol is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (The mysqlnd wire protocol).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low3.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Advisory link
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2025-1218

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-1218. EPSS is 0.18%. Act only if a listed version of The mysqlnd wire protocol is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-122: Heap-based Buffer Overflow. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 25, 2026 · NIST NVD

    Detected

    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.

  2. Oct 14, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-1218

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-1218

    30-day exploitation probability 0.2%

    first.org
  • NIST NVDVulnerability recordCVE-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 undefine

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.