NULL pointer dereference in PUPnP - #VU151941
Published: September 24, 2026
Vulnerability identifier: #VU151941
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in check_soap_request() in upnp/src/soap/soap_device.c when handling SOAP QueryStateVariable requests containing a text or CDATA node where a varName element is expected. A remote attacker can send a specially crafted HTTP POST request to cause a denial of service.
Affected software
PUPnP
Remediation
Install security update from vendor's website.
PUPnP - update to 22.1.1