Buffer overflow in Php Group
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.
Vulnerability class: Buffer Overflow
Affected products
- Php Group — versions 8.4.*, 8.5.*
Weakness classification (CWE)
References
- security@php.net (vendor-advisory)