CVE-2021-26827

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.

CVSS v3.1

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

CVSS v2.0

7.8 HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C

EPSS

1.70% chance of exploitation in the next 30 days, 76th percentile

Published

2021-04-14

Updated

2024-08-03

Proof-of-concept exploits (1)

• GD008/vuln/blob/main/tplink_wr2041/tplink_WR2041pv1.md

Exploit collections (1)

• tzwlhack/Vulnerability/blob/main/TP-Link%20WR2041%20v1%E6%8B%92%E7%BB%9D%E6%9C%8D%E5%8A%A…

References

• CVE Record
• NVD entry

Related

• CVE-2021-26810
• CVE-2021-27113
• CVE-2021-27114
• CVE-2021-31326
• CVE-2022-27083
• CVE-2023-49402