Heap out-of-bounds read in miniupnpc XML parser crashes client
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- Present
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
miniupnpc from 0 through 2.3.3 is affected. The minixml parseelt function skips an end-of-buffer check after advancing past a colon in namespace-prefix handling, causing a one-byte heap out-of-bounds read (CWE-125). A malicious or spoofed UPnP gateway on the local network can crash the client with a device description or SOAP reply whose element name ends in a colon. The references include a link to an exploit.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| miniupnp project | miniupnpc | up to 2.3.3 | — | No fix listed | CNA |
- miniupnpc Vendorminiupnp project Affected up to 2.3.3 Fixed in — No fix listed CNA
Remediation
The sources list no fixed version for miniupnpc.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Vendor assessments
Timeline
- 2026-10-14 Threatist record created from CVE-2026-110656
- 2026-10-15 Alias added: GHSA-mpq5-p36j-xg57
- 2026-10-16 Affected versions changed · Red Hat
- 2026-10-16 CVSS score added · Red Hat
References
More miniupnp project vulnerabilities
- TI-2013-00164 Stack-based buffer overflow in the ExecuteSoapAction function in the SOAPAction handler… CVSS 2.0HIGH 10.0
- TI-2013-00163 The ProcessSSDPRequest function in minissdp.c in the SSDP handler in MiniUPnP MiniUPnPd… CVSS 2.0HIGH 7.8
- TI-2017-06309 Integer signedness error in MiniUPnP MiniUPnPc v1.4.20101221 through v2.0 allows remote… CVSS 3.0CRITICAL 9.8
- TI-2022-12960 An issue was discovered in ngiflib 0.4. CVSS 3.1MEDIUM 6.5
- TI-2023-20300 ngiflib commit 84a75 was discovered to contain a segmentation violation via the function… CVSS 3.1MEDIUM 5.5
- TI-2023-20299 ngiflib commit fb271 was discovered to contain a segmentation violation via the function… CVSS 3.1MEDIUM 5.5
Sources
- CVE-2026-110656 · CVE Program
- CVE-2026-110656 · NVD
- FIRST EPSS
- GHSA-mpq5-p36j-xg57 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-110656 · Red Hat security data · CC BY 4.0
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