EUVD-2026-67935
GHSA-2cvh-668x-j624
Severity by source
CVSS:4.0/AV:A/AC:L/AT:N/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
Adjacent vector reflects LAN-only reachability of UPnP service; no auth needed; availability impact is low as only the UPnP daemon crashes, not the full device.
Primary rating from Vendor (TPLink).
CVSS VectorVendor: TPLink
CVSS:4.0/AV:A/AC:L/AT:N/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
Lifecycle Timeline
1DescriptionCVE.org
A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP action requests. A specially crafted SOAP action request containing unexpected XML content may cause the UPnP daemon to terminate unexpectedly.
Successful exploitation may result in a denial-of-service condition affecting UPnP functionality until the service is restarted or the device is rebooted.
AnalysisAI
NULL pointer dereference in the UPnP SOAP request handler of the TP-Link TL-WR841N v14 allows an adjacent-network attacker to crash the UPnP daemon by sending a crafted SOAP action request with unexpected XML content, producing a denial-of-service condition until the service is restarted or the device rebooted. Impact is confined to UPnP functionality; the router itself continues operating. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The UPnP service must be enabled on the TL-WR841N v14 - UPnP is enabled by default in TP-Link consumer router firmware. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N yields a score of 5.3 (Medium). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the updated firmware released by TP-Link, available at https://www.tp-link.com/us/support/download/tl-wr841n/v14/#Firmware. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Tl Wr841n V14
View allAuthenticated attackers can achieve root-level command execution on TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v
An out-of-bounds read vulnerability in the UPnP service of TP-Link TL-WR841N v14 routers enables adjacent network attack
Memory corruption in the TP-Link TL-WR841N v14 embedded HTTP service allows an unauthenticated attacker with adjacent ne
NULL pointer dereference in TP-Link TL-WR841N v14's UPnP service allows adjacent-network attackers to crash the UPnP pro
Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today