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CVE-2021-40655

D-Link DIR-605 Router Information Disclosure

7.5 HIGHActively exploited (CISA KEV)Public exploitEPSS 86.7%
  1. Published24 Sept 2021
  2. Added to CISA KEV16 May 2024
  3. Remediation due6 Jun 2024
Actively exploited (CISA KEV)

D-Link DIR-605 routers contain an information disclosure vulnerability that allows attackers to obtain a username and password by forging a post request to the /getcfg.php page.

Added to KEV: 16 May 2024Federal remediation due: 6 Jun 2024

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

D-Link Dir-605l Firmware2.01mt

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2021-40655 being actively exploited?

Yes. CVE-2021-40655 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 16 May 2024.

How severe is CVE-2021-40655?

CVE-2021-40655 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 86.7% probability of exploitation.

Which products are affected by CVE-2021-40655?

Affected products include D-Link Dir-605l Firmware.

How do I fix CVE-2021-40655?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2021-40655 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.