CVE-2025-14181: CWE-190 Integer overflow or wraparound in PHP Group PHP
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.
AI Analysis
Technical Summary
The vulnerability arises because the PHP SOAP HTTP client uses a check for response buffer growth that depends on signed integer overflow, which is undefined behavior and may be optimized away by compilers. When this check is removed, a malicious SOAP server can cause the client to allocate a buffer that is too small for the incoming data, leading to a heap buffer overflow condition.
Potential Impact
An attacker controlling a malicious SOAP server can exploit this vulnerability to trigger a heap buffer overflow in the PHP SOAP HTTP client. The CVSS score of 6.5 indicates a medium severity impact, with no confidentiality impact, limited integrity impact, but high availability impact. This could lead to denial of service or potentially other memory corruption consequences.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Users should monitor PHP Group advisories for updates and apply any forthcoming patches promptly.
CVE-2025-14181: CWE-190 Integer overflow or wraparound in PHP Group PHP
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
PHP Group
PHP
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability arises because the PHP SOAP HTTP client uses a check for response buffer growth that depends on signed integer overflow, which is undefined behavior and may be optimized away by compilers. When this check is removed, a malicious SOAP server can cause the client to allocate a buffer that is too small for the incoming data, leading to a heap buffer overflow condition.
Potential Impact
An attacker controlling a malicious SOAP server can exploit this vulnerability to trigger a heap buffer overflow in the PHP SOAP HTTP client. The CVSS score of 6.5 indicates a medium severity impact, with no confidentiality impact, limited integrity impact, but high availability impact. This could lead to denial of service or potentially other memory corruption consequences.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Users should monitor PHP Group advisories for updates and apply any forthcoming patches promptly.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- php
- Date Reserved
- 2025-12-06T06:46:57.344Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab6da8af7a7c5410640caa0
Added to database: 09/25/2026, 20:33:14 UTC
Last enriched: 09/25/2026, 20:48:04 UTC
Last updated: 09/26/2026, 03:39:56 UTC
Views: 10
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