CVE-2026-110656 miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseelt
A malicious UPnP gateway can crash the miniupnpc client via a heap out-of-bounds read in the XML parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-110656?
CVE-2026-110656 is a low-severity memory corruption vulnerability in miniupnpc, published on 14 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read vulnerability in the minixml parseelt function's namespace-prefix handling that skips an end-of-buffer check after advancing past ':'. A malicious or spoofed UPnP gateway on the local network can send a device description or SOAP reply ending in ':' within an element name to crash the client.
Weakness: CWE-125
Which versions are affected by CVE-2026-110656?
How do I fix CVE-2026-110656?
No fix has been published for CVE-2026-110656 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-110656 being exploited?
There is no known exploitation of CVE-2026-110656 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-110656, GHSA-mpq5-p36j-xg57, UBUNTU-CVE-2026-110656.