CVE-2026-17544

Attacker-provided inputs to bccomp() could lead to an out-of-bounds write with stack and heap corruption in PHP versions from 8.4.* before 8.4.24 and from 8.5.* before 8.5.9.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/php/php-src/security/advisories/GHSA-x692-q9x7-8c3f	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:php:php::::::::
	cpe:2.3:a:php:php::::::::

History

23 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Entradas proporcionadas por el atacante a bccomp() podrían llevar a una escritura fuera de límites con corrupción de pila y de montículo en versiones de PHP desde 8.4.* antes de 8.4.24 y desde 8.5.* antes de 8.5.9.

Information

Published : 2026-07-30 12:17

Updated : 2026-10-23 22:10

NVD link : CVE-2026-17544

Mitre link : CVE-2026-17544

CVE.ORG link : CVE-2026-17544

JSON object : View

Products Affected

php

php

CWE

CWE-787

Out-of-bounds Write

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