CVE-2021-27342

View on CVE.org

Published May 17, 2021 CVSS 3.1 · 5.9 Medium EPSS 4.6% KEV · Not listed

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 Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:dlink:dir-842e_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:dlink:dir-842e:r1:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-14102	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

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 4.6% (4.562% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html
https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py
https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225

History

No history.

Subscriptions

Dlink Dir-842e Dir-842e Firmware

Weaknesses

CWE-203

Sources

CVE record Updated: Aug 3, 2024, 8:48 PM

Status: PUBLISHED
Assigner: mitre
Published: May 17, 2021, 12:20 PM
Updated: Aug 3, 2024, 8:48 PM
Reserved: Feb 16, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:44 AM

Status: Modified
Published: May 17, 2021, 1:15 PM
Modified: Jun 17, 2026, 3:44 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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