cvedb.io
CVE-2026-5720
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-04-17T22:16:33.803 · Last modified 2026-06-29T14:22:29.553

Summary

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.

Affected products

miniupnp_project — miniupnpd

Does this affect you?

Add your gear to cvedb and we'll alert you only when miniupnp_project ships something exploited.

Check my exposure →

References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.