CVE-2026-110656
miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseelt
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.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseelt
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.
- Record
CVE-2026-110656- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
EUVDEUVD-2026-101129
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.
- Record
EUVD-2026-101129- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-mpq5-p36j-xg57
miniupnpc through 2.3.3 contains a one-byte heap out-of-bounds read vulnerability in the minixml...
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.
- Record
GHSA-mpq5-p36j-xg57- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-110656- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Weakness
- CWE-125
- Updated
- 2026-11-02
OSV
miniupnpc through 2.3.3 Heap Out-of-Bounds Read via minixml parseelt
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.
- Record
CVE-2026-110656- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - Weakness
- CWE-125
- Updated
- 2026-11-02
OSVDEBIAN-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.
- Record
DEBIAN-CVE-2026-110656- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
OSVUBUNTU-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.
- Record
UBUNTU-CVE-2026-110656- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
miniupnpcDebian:12 |
All versions, plus listed versions 2.2.4-12.2.5-12.2.6-12.2.8-12.2.8-22.3.3-12.3.3-2 |
None known |
miniupnpcDebian:13 |
All versions, plus listed versions 2.2.8-22.3.3-12.3.3-2 |
None known |
miniupnpcDebian:14 |
All versions, plus listed versions 2.2.8-22.3.3-12.3.3-2 |
None known |
miniupnpcUbuntu:16.04:LTS |
All versions, plus listed versions 1.9.20140610-2ubuntu11.9.20140610-2ubuntu21.9.20140610-2ubuntu2.16.04.11.9.20140610-2ubuntu2.16.04.2 |
None known |
miniupnpcUbuntu:18.04:LTS |
All versions, plus listed versions 1.9.20140610-4ubuntu11.9.20140610-4ubuntu2 |
None known |
miniupnpcUbuntu:20.04:LTS |
All versions, plus listed versions 2.1.20190824-0ubuntu12.1.20190824-0ubuntu2 |
None known |
miniupnpcUbuntu:22.04:LTS |
All versions, plus listed versions 2.2.1-12.2.1-1build12.2.3-12.2.3-1build1 |
None known |
miniupnpcUbuntu:24.04:LTS |
All versions, plus listed versions 2.2.5-12.2.6-12.2.6-1build12.2.6-1build2 |
None known |
miniupnpcUbuntu:26.10 |
All versions, plus listed versions 2.3.3-2build1 |
None known |
miniupnpcUbuntu:26.04:LTS |
All versions, plus listed versions 2.2.8-2build22.3.3-22.3.3-2build1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-110656 is a low vulnerability (CVSS 2.3) in Miniupnp Project Miniupnpc, published October 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.29%, the 21st percentile. No source names a fixed version.
References
hackmd.io/@haind-pwn/miniupnpc-minixml-oob-read
github.com/miniupnp/miniupnp/blob/bf4215a7574f88aa55859db9db00e3ae58cf42d6/miniupnpc/src/minixml.c
vulncheck.com/advisories/miniupnpc-through-2.3.3-heap-out-of-bounds-read-via-minixml-parseelt
nvd.nist.gov/vuln/detail/CVE-2026-110656