Integer overflow in PHP Group
CVE-2025-14181
The SOAP HTTP client guards its response buffer growth with a check that relies on signed integer overflow, which is undefined behaviour and is not guaranteed to trigger. When the check is optimised away, a malicious SOAP server can make the client allocate a buffer far smaller than the data it then writes into it, producing a heap buffer overflow.
Vulnerability class: Integer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/php/php-src/security/advisories/GHSA-cj93-vc83-wgqv (vendor-advisory)
Frequently asked questions
- What is CVE-2025-14181?
- CVE-2025-14181 is a medium-severity vulnerability in PHP Group, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2026-09-25.
- How severe is CVE-2025-14181?
- Medium severity. CVSS v3 base score is 6.5 out of 10.