SQL injection via NUL-truncated quoted strings
Published May 10, 2026 · Updated May 10, 2026
SQL injection in PHP PDO Firebird allows remote attackers to read or modify Firebird data through NUL-byte values passed to PDO::quote(). The driver's token-by-token query builder copies string tokens with strncat(), which stops at the NUL byte and drops the closing quote, so later SQL tokens escape the intended string. Exposure requires an application to quote attacker-controlled values, embed them into a statement, and use pdo_firebird in PHP 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, or 8.5.* before 8.5.6; access remains bounded by the application's database privileges.
Summary
What happened
SQL injection in PHP PDO Firebird allows remote attackers to read or modify Firebird data through NUL-byte values passed to PDO::quote(). The driver's token-by-token query builder copies string tokens with strncat(), which stops at the NUL byte and drops the closing quote, so later SQL tokens escape the intended string. Exposure requires an application to quote attacker-controlled values, embed them into a statement, and use pdo_firebird in PHP 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, or 8.5.* before 8.5.6; access remains bounded by the application's database privileges.
The record
- CVE
- CVE-2025-14179
- Published
- May 10, 2026
- Updated
- May 10, 2026
- Vendor
- The PHP Group
- Product
- PHP
- Classifications
- CWE-89, CAPEC-66, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 10, 2026CVE publishedPublication date reported by the CVE source.
- May 10, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=8.2.* <8.2.31
- Affected versionversion=8.3.* <8.3.31
- Affected versionversion=8.4.* <8.4.21
- Affected versionversion=8.5.* <8.5.6
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-w476-322c-wpvm demonstrationproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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