Out-of-bounds Read in Miniupnp Project Miniupnpc
CVE-2026-110656
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.
Vulnerability class: Buffer Overflow
Published .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/miniupnpc-minixml-oob-read (technical-description, exploit)
- github.com/miniupnp/miniupnp/blob/bf4215a7574f88aa55859db9db00e3ae58cf42d6/mini… (technical-description)
- github.com/miniupnp/miniupnp/commit/64ef08a12aabab57be0bf7e40f047c8f14dedf9c (patch)
- github.com/miniupnp/miniupnp (product)
- www.vulncheck.com/advisories/miniupnpc-through-2.3.3-heap-out-of-bounds-read-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-110656?
- CVE-2026-110656 is a low-severity vulnerability in Miniupnp Project Miniupnpc, classified under Out-of-bounds Read. CVSS score: 3.1/10. Published 2026-10-14.
- How severe is CVE-2026-110656?
- Low severity. CVSS v3 base score is 3.1 out of 10.