EUVD-2026-23565CVSS VectorNVD
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/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
Lifecycle Timeline
3DescriptionNVD
miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.
AnalysisAI
Integer underflow in miniupnpd's SOAPAction header parser triggers out-of-bounds memory reads, enabling adjacent network attackers to crash UPnP-enabled routers or leak sensitive memory contents without authentication. Affects miniupnpd versions prior to 2.3.10. …
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RemediationAI
Within 24 hours: Identify all miniupnpd deployments via network inventory and confirm version numbers (target: versions <2.3.10). Within 7 days: Apply vendor patch to miniupnpd 2.3.10 or later (commit a0ee71e9fa66 or equivalent release) across all affected devices; prioritize internet-facing UPnP services and devices handling sensitive data. …
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External POC / Exploit Code
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