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Exploited vulnerability · CISA KEV

Is CVE-2021-40407 exploited? Yes: in CISA KEV since 18 Dec 2024

Gociux · Reolink RLC-410W IP Camera · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-40407, Reolink RLC-410W IP Camera OS Command Injection Vulnerability , is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 18 Dec 2024, 1055 days after it was published. It affects Reolink RLC-410W IP Camera. If you run it, CISA's required action is: The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

exploitedYesCISA KEV · 18 Dec 2024
ransomwareNot knownno confirmed use
EPSStop 5%very likely to be exploited
severity9.1CVSS 3.0 · critical
US federal due8 Jan 2025BOD 22-01 deadline

What it is

Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.

VendorReolink (2 exploited CVEs in KEV)
ProductRLC-410W IP Camera
VulnerabilityReolink RLC-410W IP Camera OS Command Injection Vulnerability
WeaknessCWE-78
Published28 Jan 2022
Added to KEV18 Dec 2024
Reported by (CNA)talos

What to do

  1. Check whether you run it. Look for RLC-410W IP Camera in your asset inventory, including appliances and cloud images. Stack check lists every exploited Reolink CVE at once.
  2. Apply the fix. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.
  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 28 Jan 2022.
  4. Get told next time. Email alerts when CISA adds a CVE for Reolink.

References

Questions

Is CVE-2021-40407 being exploited?

Yes. CISA added CVE-2021-40407 to the Known Exploited Vulnerabilities catalog on 18 Dec 2024, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-40407 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-2021-40407?

The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable. Check Reolink's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected RLC-410W IP Camera 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 December 2024 · Reolink scorecard · act-now radar.

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