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.

Affected products

Php

Php

< 8.4.24, 8.5.9

CVSS 3.1

9.8 CRITICAL

EPSS

0.5% (42th percentile)

Weakness

CWE-787

NVD status

Analyzed

Published

2026-07-30

Attack patterns

CAPEC-100