CVE-2026-5720
Low
Low
Medium
High
Critical
CVSS Score
Vulnerability Description
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.
References & Resources
Severity Details
out of 10.0
Low
Weakness Type (CWE)
CWE-125
Top 25 #11
Out-of-bounds Read
- Description
- The product reads data past the end, or before the beginning, of the intended buffer.
- Typical Severity
- High
- Abstraction Level
- Base
Key Information
- Published Date
- April 17, 2026
