CVE-2021-20151 — CRITICAL (10.0)

Vulnerability Description

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device. The router's management software manages web sessions based on IP address rather than verifying client cookies/session tokens/etc. This allows an attacker (whether from a different computer, different web browser on the same machine, etc.) to take over an existing session. This does require the attacker to be able to spoof or take over original IP address of the original user's session.

CVSS Score

10.0

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Trendnet	Tew-827Dru Firmware	2.08b01
Trendnet	Tew-827Dru	2.0

Related Weaknesses (CWE)

CWE-384

References

https://www.tenable.com/security/research/tra-2021-54Third Party Advisory
https://www.tenable.com/security/research/tra-2021-54Third Party Advisory

FAQ

What is CVE-2021-20151?

CVE-2021-20151 is a vulnerability with a CVSS score of 10.0 (CRITICAL). Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device. The router's management software manages web sessions based on IP address rather than verifying cli...

How severe is CVE-2021-20151?

CVE-2021-20151 has been rated CRITICAL with a CVSS base score of 10.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-20151?

Check the references section above for vendor advisories and patch information. Affected products include: Trendnet Tew-827Dru Firmware, Trendnet Tew-827Dru.