Medium severity · published Oct 7, 2026
CVE-2026-107159
MiniUPnPd through 2.3.11 Divide-by-Zero DoS via SSDP M-SEARCH MX Header
6.5
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
miniupnpd · miniupnp project
through 2.3.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-107159
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-107159
patch
https://github.com/miniupnp/miniupnp/commit/8f13b7a5843f5270db684099c0a083f98869636a
product
https://github.com/miniupnp/miniupnp
technical-description
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
third-party-advisory
https://www.vulncheck.com/advisories/miniupnpd-through-2.3.11-divide-by-zero-dos-via-ssdp-m-search-mx-header
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