Critical severity · published Dec 30, 2021
CVE-2021-20151
Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device
10.0
CVSS
1.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TF
Tew-827dru Firmware · Trendnet
2.08b01 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20151
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20151
Third Party Advisory
https://www.tenable.com/security/research/tra-2021-54
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