CVE-2026-107159 MiniUPnPd through 2.3.11 Divide-by-Zero DoS via SSDP M-SEARCH MX Header
Unauthenticated local attackers can crash the MiniUPnPd daemon by sending a specific SSDP M-SEARCH packet with MX: 0, causing a divide-by-zero error.
- 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-2026-107159?
CVE-2026-107159 is a high-severity denial of service vulnerability in miniupnpd, published on 7 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
MiniUPnPd through 2.3.11 built with --strict contains a divide-by-zero vulnerability in ProcessSSDPData() that allows unauthenticated local network attackers to crash the daemon. Attackers can send a single multicast M-SEARCH datagram with MX: 0 and a known ST to port 1900, triggering SIGFPE and denying UPnP IGD service.
Weakness: CWE-369
Which versions are affected by CVE-2026-107159?
How do I fix CVE-2026-107159?
No fix has been published for CVE-2026-107159 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-107159 being exploited?
There is no known exploitation of CVE-2026-107159 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as DEBIAN-CVE-2026-107159, GHSA-57wm-f7xc-rw5q, UBUNTU-CVE-2026-107159.