CVE-2021-26827

HIGH

TP-Link TL-WR2041+ Firmware - Denial of Service via Long SSID Parameter in Site Survey Page

Title source: llm

Description

Buffer Overflow in TP-Link WR2041 v1 firmware for the TL-WR2041+ router allows remote attackers to cause a Denial-of-Service (DoS) by sending an HTTP request with a very long "ssid" parameter to the "/userRpm/popupSiteSurveyRpm.html" webpage, which crashes the router.

References (1)

Core 1

Core References

Exploit, Third Party Advisory x_refsource_misc

https://github.com/GD008/vuln/blob/main/tplink_wr2041/tplink_WR2041pv1.md

Scores

CVSS v3 7.5

EPSS 0.0170

EPSS Percentile 74.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE

CWE-120

Status published

Products (1)

tp-link/tl-wr2041\+_firmware

Published Apr 14, 2021

Tracked Since Feb 18, 2026