CVE-2021-20158

9.8 criticalEPSS 9.6%

Critical (9.8) in trendnet tew-827dru firmware. EPSS 9.6% chance of exploitation in the next 30 days.

Trendnet AC2600 TEW-827DRU version 2.08B01 contains an authentication bypass vulnerability. It is possible for an unauthenticated, malicous actor to force the change of the admin password due to a hidden administrative command.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 9.6% chance of exploitation in the next 30 days; higher than 95% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2021-12-30
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

trendnet:tew-827dru_firmware

References

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

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