CVE-2021-40655

Name: CVE-2021-40655
Creator: NVD / NIST
Published: 2021-09-24T21:15:07.31+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10Actively ExploitedEPSS 87.04%

Last modified Jun 17, 2026

CVE-2021-40655 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. CISA has confirmed active exploitation in the wild. EPSS estimates a 87.04% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

87.04%

99.7th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jun 6, 2024.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Dlink	Dir-605l Firmware	2.01mt

References

https://github.com/Ilovewomen/D-LINK-DIR-605/Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://github.com/Ilovewomen/D-LINK-DIR-605/Exploit, Third Party Advisory
https://www.dlink.com/en/security-bulletin/Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40655US Government Resource

Timeline

Published: Sep 24, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-40655?

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

How severe is CVE-2021-40655?

CVE-2021-40655 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 87.04% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-40655?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-40655?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST