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Exploited vulnerability · CISA KEV

Is CVE-2021-45382 exploited? Yes: in CISA KEV since 4 Apr 2022

Gociux · D-Link Multiple Routers · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-45382, D-Link Multiple Routers Remote Code Execution Vulnerability, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 4 Apr 2022, 46 days after it was published. It affects D-Link Multiple Routers. If you run it, CISA's required action is: The impacted product is end-of-life and should be disconnected if still in use.

exploitedYesCISA KEV · 4 Apr 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due25 Apr 2022BOD 22-01 deadline

What it is

A remote code execution vulnerability exists in all series H/W revisions routers via the DDNS function in ncc2 binary file.

VendorD-Link (26 exploited CVEs in KEV)
ProductMultiple Routers
VulnerabilityD-Link Multiple Routers Remote Code Execution Vulnerability
WeaknessCWE-78
Published17 Feb 2022
Added to KEV4 Apr 2022
Reported by (CNA)mitre

What to do

  1. Check whether you run it. Look for Multiple Routers in your asset inventory, including appliances and cloud images. Stack check lists every exploited D-Link CVE at once.
  2. Apply the fix. The impacted product is end-of-life and should be disconnected if still in use.
  3. If you can't patch today, take the affected service off the internet or restrict who can reach it, and check its logs for signs of compromise since 17 Feb 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for D-Link.

Other exploited CVEs in Multiple Routers

References

Questions

Is CVE-2021-45382 being exploited?

Yes. CISA added CVE-2021-45382 to the Known Exploited Vulnerabilities catalog on 4 Apr 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-45382 used in ransomware attacks?

CISA does not list known ransomware use for it. That can change, and exploitation alone is reason to fix it first.

How do I fix CVE-2021-45382?

The impacted product is end-of-life and should be disconnected if still in use. Check D-Link's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Multiple Routers and watch it for signs of compromise.

Sources: CISA KEV (exploitation, ransomware use, required action, due date), the CVE record (publication date, CVSS, CNA), NVD and FIRST EPSS (live score). More: all KEV additions in April 2022 · D-Link scorecard · act-now radar.

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