What’s Vulnerable › Vulnerabilities

CVE-2026-110655: miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseatt

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-15
• Weakness: CWE-125

Description

miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read vulnerability in the minixml parseatt function that allows malicious UPnP gateways to read past buffer bounds via crafted replies. Attackers on the local network can spoof a gateway serving device descriptions or SOAP responses ending in '=' to crash the client.

Affected products

• miniupnp project miniupnpc: through 2.3.3

References

• https://github.com/miniupnp/miniupnp
• https://github.com/miniupnp/miniupnp/blob/bf4215a7574f88aa55859db9db00e3ae58cf42d6/miniupnpc/src/minixml.c#L61
• https://github.com/miniupnp/miniupnp/commit/3cfb4fb78d5ac04ed0dadc8dd842fc9e448916db
• https://hackmd.io/@haind-pwn/miniupnpc-minixml-oob-read
• https://www.vulncheck.com/advisories/miniupnpc-through-2.3.3-heap-out-of-bounds-read-via-minixml-parseatt

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