9.8

CVE-2021-20149: trendnet tew-827dru_firmware Incorrect Authorization

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

Vulnerability summary

CVE-2021-20149 is a critical (CVSS 9.8) Incorrect Authorization vulnerability in trendnet tew-827dru_firmware. EPSS estimates a 1.44% chance of exploitation in the next 30 days, higher than 73% 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
1.44%
0%100%
Low · 0.00 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 does not have sufficient access controls for the WAN interface. The default iptables ruleset for governing access to services on the device only apply to IPv4. All services running on the devices are accessible via the WAN interface via IPv6 by default.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.44%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

0.00 pp

From 1.44% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.44%

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