Is CVE-2021-40655 actively exploited?

CVE-2021-40655 has no public evidence of in-the-wild exploitation as of 2025-11-10.

What is the CVSS score for CVE-2021-40655?

CVE-2021-40655 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

How do I patch CVE-2021-40655?

Patch guidance is available from dlink security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-40655.

Which products are affected by CVE-2021-40655?

1 product: dlink dir-605l firmware.

Fix CVE-2021-40655 - HIGH dlink dir-605l firmware

Description

An informtion disclosure issue exists in D-LINK-DIR-605 B2 Firmware Version : 2.01MT. An attacker can obtain a user name and password by forging a post request to the / getcfg.php page

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none
Weaknesses: CWE-863 · Incorrect Authorization CWE-863 · Incorrect Authorization

Metadata

Primary Vendor: DLINK
Published: 9/24/2021
Last Modified: 11/10/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-40655

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary