Active Exploitation
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
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Confirmed Active Exploitation
This vulnerability is listed in the CISA KEV Catalog. Federal agencies are mandated to patch immediately. Immediate remediation is required.
Exploitation Probability (EPSS)
Critical Priority92.61%
The Exploit Prediction Scoring System (EPSS) uses machine learning to estimate the probability that a vulnerability will be exploited in the wild within the next 30 days.
0% (Theoretical)100% (Certainty)
7-Day Exploitation Trend
Vulnerability Timeline
2 eventsSep 24, 2021
Vulnerability Disclosed
Published to component-level vulnerability database.
Oct 22, 2025
Last Updated
Record updated with new analysis or tags.
Threat Actor Attribution
PREMIUM INTELAssociated Groups:Lazarus Group, APT28
Ransomware Campaigns:LockBit 3.0, BlackCat
IoCs (Indicators):14 IPs, 3 Hashes
Remediation & Mitigation
SOLUTIONOfficial patches and mitigation steps are available for this vulnerability.
# Update Command
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
apt-get update && apt-get upgrade -y specific-package
# Verify installation
dpkg -l | grep package-name
Affected Products
2 Total
dlink/dir-605l_firmware2.01mt
dlink/dir-605lb2
Am I Vulnerable?
Check your domain or package.json for CVE-2021-40655 exposure.
Vulnerability Details
CVSS Base Score
7.5/ 10
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published Date
Sep 24, 2021
Last Modified
Oct 22, 2025
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