SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-20155

Trendnet AC2600 TEW-827DRU version 2.08B01 makes use of hardcoded credentials.

CRITICAL 9.8EPSS 1.96%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Trendnet AC2600 TEW-827DRU version 2.08B01 makes use of hardcoded credentials. It is possible to backup and restore device configurations via the management web interface. These devices are encrypted using a hardcoded password of "12345678".

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
1.96% probability · 80th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-798
Affected
trendnet/tew-827dru firmware
Source
vulnreport@tenable.com
EPSS trend
0%3%5%27 October 2026: 1.96%27 October 202627 October 2026

EPSS 2.0% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.