CVE-2021-26827 — HIGH (7.5)

Vulnerability 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.

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tp-Link	Tl-Wr2041\+ Firmware	-
Tp-Link	Tl-Wr2041\+	-

Related Weaknesses (CWE)

CWE-120

References

https://github.com/GD008/vuln/blob/main/tplink_wr2041/tplink_WR2041pv1.mdExploitThird Party Advisory
https://github.com/GD008/vuln/blob/main/tplink_wr2041/tplink_WR2041pv1.mdExploitThird Party Advisory

FAQ

What is CVE-2021-26827?

CVE-2021-26827 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 "...

How severe is CVE-2021-26827?

CVE-2021-26827 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-26827?

Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Tl-Wr2041\+ Firmware, Tp-Link Tl-Wr2041\+.