SQL Injection in PHP

CVE-2025-14179

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the PDO Firebird driver improperly handles NUL bytes when preparing SQL queries. During token-by-token query construction, a string token containing a NUL byte is copied via strncat(), which stops at the NUL byte, dropping the closing quote and causing subsequent SQL tokens to be interpreted as part of the string. This allows SQL injection when attacker-controlled values are quoted via PDO::quote() and embedded in SQL statements.

Vulnerability class: SQL Injection

EPSS: 0.004 (36.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2025-14179?
CVE-2025-14179 is a critical-severity vulnerability in PHP, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-05-10.
How severe is CVE-2025-14179?
Critical severity. CVSS v3 base score is 9.8 out of 10.