CVE-2026-9105
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk42th percentile - higher than 42% of all known CVEs
Summary
A stack-based buffer overflow vulnerability in the web management interface of TP-Link TL-WR841N v14 allows an authenticated remote attacker to crash the device by sending a crafted HTTP request. Successful exploitation leads to a denial-of-service condition, causing the device to crash and automatically reboot.
Risk Assessment
The risk is that an authenticated attacker can remotely disable the router, potentially disrupting the local network and affecting service availability for users.
Recommendation
It is recommended to immediately apply a firmware update from the vendor if available, or restrict access to the management interface to trusted IP addresses only.
Other vulnerabilities in TP-Link TL-WR841N
See all- CVE-2026-5039High
TP-Link TL-WR841N v13 uses DES-CBC encryption in the TDDPv2 debug protocol with a cryptographic key derived from default web management credentials, making the key predictable if the device is left in default configuration.
- CVE-2025-9014High
A Null Pointer Dereference vulnerability exists in the referer header check of the web portal of TP-Link TL-WR841N v14, caused by improper input validation. A remote, unauthenticated attacker can exploit this flaw and cause Denial of Service on the web portal service. This issue affects TL-WR841N v14 before version 250908.
- CVE-2026-76651Medium
A buffer overflow vulnerability exists in the embedded HTTP service in TL-WR841N v14 when processing multipart/form-data requests. Insufficient validation of an attacker-controlled boundary parameter may allow a remote unauthenticated attacker to submit a crafted request that corrupts memory by overwriting data beyond the bounds of an internal buffer.
- CVE-2026-76650Medium
A NULL pointer dereference vulnerability exists in TL-WR841N v14 in the UPnP service when processing SOAP state variable query requests. A specially crafted SOAP query may trigger unexpected termination or instability of the process hosting the UPnP service.
- CVE-2026-76649Medium
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.
- CVE-2022-30024High
A buffer overflow in the httpd daemon on TP-Link TL-WR841N V12 (firmware 3.16.9) allows an authenticated remote attacker to execute arbitrary code via a GET request to the System Tools page of the Wi-Fi network. This also affects versions V11 and V10.
Original NVD description (English source)
An authenticated stack-based buffer overflow vulnerability exists in the web management interface of TP-Link TL-WR841N v14. A remote authenticated attacker can send crafted HTTP requests to cause the embedded web server to overflow a stack buffer, resulting in a crash of the affected process. Successful exploitation results in a denial-of-service condition, causing the device to crash and automatically reboot.