VULNERABILITY INTELLIGENCE

CVE-2021-26827

CVSS score7.5 HIGH
EPSS probability1.70%
CISA KEVNot currently listed
Published2021-04-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Primary references