Trendnet AC2600 TEW-827DRU version 2.08B01 contains a flaw in the session management for the device.

published 2021-12-30 4y ago modified 2026-06-17 4mo ago also EUVD-2021-7608

cvss: 10.0; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.7%; EPSS 1.7% chance of exploitation in 30 days, percentile 76%
public exploits: 0; none known

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.

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Exploit prediction

1.66% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Trendnet AC2600 TEW-827DRU

Classification

Weakness

CWE-384 Session Fixation

References

tenable.com /security/research/tra-2021-54
third-party-advisory

Sources

CVE List CVE-2021-20151
NVD CVE-2021-20151

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