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

published 2021-12-30 4y ago modified 2026-06-17 4mo ago also EUVD-2021-7612

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 2.0%; EPSS 2.0% chance of exploitation in 30 days, percentile 80%
public exploits: 0; none known

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".

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Exploit prediction

1.96% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

tenable.com https://www.tenable.com/security/research/tra-2021-54 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

n/a Trendnet AC2600 TEW-827DRU

Classification

Weakness

CWE-798 Use of Hard-coded Credentials

References

tenable.com /security/research/tra-2021-54
exploit, third-party-advisory

Sources

CVE List CVE-2021-20155
NVD CVE-2021-20155

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