EUVD-2026-16419
GHSA-hhj2-6q7v-v5hc
CVSS Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/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
4Description
The vulnerability exists in the UPnP component of TL-WR841N v14, where improper input validation leads to an out-of-bounds read, potentially causing a crash of the UPnP service. Successful exploitation can cause the UPnP service to crash, resulting in a Denial-of-Service condition. This vulnerability affects TL-WR841N v14 < EN_0.9.1 4.19 Build 260303 Rel.42399n (V14_260303) and < US_0.9.1.4.19 Build 260312 Rel. 49108n (V14_0304).
Analysis
An out-of-bounds read vulnerability in the UPnP service of TP-Link TL-WR841N v14 routers enables adjacent network attackers to crash the UPnP daemon without authentication, resulting in denial of service. Affected devices include firmware versions prior to EN_0.9.1 4.19 Build 260303 and US_0.9.1.4.19 Build 260312. …
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Remediation
Within 24 hours: Identify all TP-Link TL-WR841N v14 routers in production and document current firmware versions. Within 7 days: Prioritize patching devices running firmware versions prior to EN_0.9.1 4.19 Build 260303 (EN region) and US_0.9.1.4.19 Build 260312 (US region) with the latest available firmware from TP-Link. …
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