Low severity · published Oct 14, 2026
CVE-2026-110656
miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseelt
3.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 22% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MI
miniupnpc · miniupnp project
through 2.3.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-110656
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-110656
technical-description
https://hackmd.io/@haind-pwn/miniupnpc-minixml-oob-read
technical-description
https://github.com/miniupnp/miniupnp/blob/bf4215a7574f88aa55859db9db00e3ae58cf42d6/miniupnpc/src/minixml.c#L141
patch
https://github.com/miniupnp/miniupnp/commit/64ef08a12aabab57be0bf7e40f047c8f14dedf9c
product
https://github.com/miniupnp/miniupnp
third-party-advisory
https://www.vulncheck.com/advisories/miniupnpc-through-2.3.3-heap-out-of-bounds-read-via-minixml-parseelt
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3.1
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