Threat database

CVE-2026-110656 is a low-severity vulnerability in the miniupnpc library up to version 2.3.3. It is caused by a one-byte heap out-of-bounds read in the minixml parseelt function due to improper handling of namespace prefixes when encountering a colon character ':'. A malicious or spoofed UPnP gateway on the local network can exploit this by sending crafted device descriptions or SOAP replies with element names ending in ':', causing the client to crash.

CVE-2026-110655 is a low-severity vulnerability in miniupnpc versions up to 2.3.3 where a one-byte heap out-of-bounds read occurs in the minixml parseatt function. This flaw allows a malicious UPnP gateway on the local network to cause the client to read past buffer boundaries via crafted device description or SOAP response messages ending with '='. Exploitation can lead to client crashes but does not escalate to code execution or data corruption.

CVE-2026-107159 is a divide-by-zero vulnerability in miniupnpd up to version 2.3.11 when built with the --strict option. This flaw occurs in the ProcessSSDPData() function and can be triggered by unauthenticated local network attackers sending a multicast M-SEARCH datagram with MX: 0 and a known ST to port 1900. Exploitation causes the daemon to crash, resulting in denial of UPnP IGD service.

miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.