What’s Vulnerable › Vulnerabilities

CVE-2025-14179: SQL injection in pdo_firebird via NUL bytes in quoted strings

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-10 · updated 2026-07-25
• Weakness: CWE-89

Description

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.

Affected products

• PHP: from 8.2.0 before 8.2.31; from 8.3.0 before 8.3.31; from 8.4.0 before 8.4.21; from 8.5.0 before 8.5.6 — fixed in 8.2.31, 8.3.31, 8.4.21, 8.5.6

How to fix

Upgrade to a fixed version: PHP 8.2.31, 8.3.31, 8.4.21, 8.5.6. Check the vendor advisory for mitigations.

References

• https://github.com/php/php-src/security/advisories/GHSA-w476-322c-wpvm
• https://access.redhat.com/security/cve/CVE-2025-14179
• https://bugzilla.redhat.com/show_bug.cgi?id=2468567
• https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-14179.json

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