Access of Uninitialized Pointer in PUPnP - #VU159577
Published: November 6, 2026
Vulnerability identifier: #VU159577
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:A/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-824
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated adjacent-network attacker to crash a PUPnP control point that downloads XML descriptions from discovered devices, causing denial of service.
The vulnerability exists due to HTTP status 0 being interpreted as success in UpnpDownloadXmlDoc(), leaving a pointer uninitialized when the response body is nonempty. An unauthenticated adjacent-network attacker can advertise a malicious device through SSDP and return such a description response, triggering an invalid pointer access or release.
Affected software
PUPnP
Remediation
Install security update from vendor's website.
PUPnP - update to 22.1.9