9.8

CVE-2021-20158: trendnet tew-827dru_firmware

CVSS: 9.8v3.1CriticalModified
Published 30-12-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20158 is a critical (CVSS 9.8) vulnerability in trendnet tew-827dru_firmware. EPSS estimates a 9.47% chance of exploitation in the next 30 days, higher than 95.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
9.47%
0%100%
Low · -1.39 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 30-12-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

9.47%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

-1.39 pp

From 10.86% on 21-09-2026

21-09-202621-10-2026
EPSS score
9.47%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Trendnet1 product

1 vendor · 1 product

References

1 links