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CVE-2021-27342

nvd nist
Published: May 17, 2021Modified: Jun 17, 2026

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5.9
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitability: 2.2 / Impact: 3.6
Source: NVD

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

Affected (1)

Dlink
1 product
Dir 842e Firmware
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Dir 842e Firmware
Up to 3.0.2
Running on/withPlatform Versions
Dlink
Dir 842e
Version r1

Related CWEs

CWE-203
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (6)

Source: cve@mitre.org
ExploitThird Party Advisory
Source: cve@mitre.org
ExploitThird Party Advisory
Source: cve@mitre.org
Vendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory

Timeline

No history available yet.