Auth bypass in Trendnet Tew-827dru
CVE-2021-20158
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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.109 (95.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.109 · newest: 0.109 · change: 0.000
Affected products
- Trendnet Tew-827dru — versions 2.0
- Trendnet Tew-827dru Firmware — versions 2.08b01
- Trendnet Ac2600 Tew-827dru — versions 2.08B01
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.tenable.com/security/research/tra-2021-54 (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20158?
- CVE-2021-20158 is a critical-severity vulnerability in Trendnet Tew-827dru, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2021-12-30.
- How severe is CVE-2021-20158?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-20158 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.