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CVE-2021-20152

22
FAUCET Score

CVE-2021-20152 describes an authentication bypass vulnerability in the Trendnet AC2600 TEW-827DRU router, specifically affecting version 2.08B01. If the bittorrent functionality is enabled, an unauthenticated attacker can access and modify settings and files through the bittorrent web client. This vulnerability carries a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity to achieve partial confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.08b01CPE matchmatch criteria
cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 33rd percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

giteavendor investigatingvia llm_extracted
opensshvendor investigatingvia llm_extracted
railsvendor investigatingvia llm_extracted

Vendor Advisories (3)

opensshllm-openssh-45a77a1aa1e5a984CRITICAL

Trendnet AC2600 TEW-827DRU Multiple Vulnerabilities

Dec 30, 2021
giteallm-gitea-3b028f48a893fc43CRITICAL

Trendnet AC2600 TEW-827DRU Multiple Vulnerabilities

Dec 30, 2021
railsllm-rails-32c592b9c1e5a4e5CRITICAL

Trendnet AC2600 TEW-827DRU Multiple Vulnerabilities

Dec 30, 2021

References

tenable.com / security/research/tra-2021-54
Third Party Advisory