CVE-2021-27342

MEDIUM

D-Link Router DIR-842 v3.0.2 - Auth Bypass

Title source: llm

Description

An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack

Exploits (2)

nomisec WORKING POC 14 stars
by mavlevin · poc
https://github.com/mavlevin/D-Link-CVE-2021-27342-exploit
inthewild WORKING POC
poc
https://github.com/guywhataguy/d-link-cve-2021-27342-exploit

Scores

CVSS v3 5.9
EPSS 0.0743
EPSS Percentile 91.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-203
Status published
Products (1)
dlink/dir-842e_firmware < 3.0.2
Published May 17, 2021
Tracked Since Feb 18, 2026