D-Link - Information Disclosure (CVE-2021-40655)
502Exploiting IPs reported
An informtion disclosure issue exists in D-Link product running the 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
CrowdSec analysis
CVE-2021-40655 is a vulnerability affecting certain D-Link products, where information disclosure can occur if a remote attacker forges requests to a specific configuration page.
CrowdSec has been tracking this vulnerability and its exploits since 10th of March 2025.
CrowdSec network data shows that most actors exploiting CVE-2021-40655 rely on broad, untargeted scans with minimal filtering. The activity is largely automated and opportunistic in nature. CrowdSec data also reveals a clear uptick in attacks involving CVE-2021-40655 over the past week. Activity is above the usual baseline, suggesting growing attention from attackers. This may reflect rising awareness, recent exploit releases, or expanded targeting efforts.
Attackers typically attempt to exploit this issue by making requests to endpoints ending with /getcfg.php.
Exploitation
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Protection
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Blocklist
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