Vulnerability · Published Oct 7, 2026 · Assigned by VulnCheck

CVE-2026-107159MiniUPnPd through 2.3.11 Divide-by-Zero DoS via SSDP M-SEARCH MX Header

Medium 6.5

In plain English

A medium-severity security flaw in miniupnpd from miniupnp project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.5%top 59.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack tooling1Public PoC

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Debian:12	miniupnpd	no fix listed	DEBIAN-CVE-2026-107159
Debian:13	miniupnpd	no fix listed	DEBIAN-CVE-2026-107159
Debian:14	miniupnpd	no fix listed	DEBIAN-CVE-2026-107159
Ubuntu:26.10	miniupnpd	no fix listed	UBUNTU-CVE-2026-107159

Affected products (as reported)

Vendor	Product	Versions
miniupnp project	miniupnpd	0 – through 2.3.11

Weakness: CWE-369 · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Patch Commit patch
https://github.com/miniupnp/miniupnp product
https://github.com/miniupnp/miniupnp/blob/miniupnpd_2_3_11/miniupnpd/minissdp.c#L1143-L1158 technical-description
https://github.com/miniupnp/miniupnp/blob/miniupnpd_2_3_11/miniupnpd/minissdp.c#L1281 technical-description
VulnCheck Advisory: MiniUPnPd through 2.3.11 Divide-by-Zero DoS via SSDP M-SEARCH MX Header third-party-advisory