CVE-2025-14181

Integer overflow to buffer overflow in soap HTTP parsing

MEDIUM
6.5
CVSS Score
Published: September 25, 2026 at 08:26 PM UTC
Updated: October 23, 2026 at 02:56 PM UTC
1 product affected across 1 vendorPHP

Using PHP by PHP Group?

Get instant alerts when new vulnerabilities affect PHP - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

PHP· PHPdrupal
95%
8.2.0 ≤ v < 8.2.348.3.0 ≤ v < 8.3.358.4.0 ≤ v < 8.4.268.5.0 ≤ v < 8.5.118.2.*8.3.*8.4.*8.5.*
Affected range stops below 8.2.34, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.3.35, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.4.26, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.5.11, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMphp
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-190

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card