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Exploited vulnerability · CISA KEV

Is CVE-2021-36260 exploited? Yes: in CISA KEV since 10 Jan 2022

Gociux · Hikvision Security cameras web server · data: CISA KEV, CVE record, FIRST EPSS

Yes. CVE-2021-36260, Hikvision Improper Input Validation, is being exploited in the wild. CISA added it to its Known Exploited Vulnerabilities catalog on 10 Jan 2022, 110 days after it was published. It affects Hikvision Security cameras web server. If you run it, CISA's required action is: Apply updates per vendor instructions.

exploitedYesCISA KEV · 10 Jan 2022
ransomwareNot knownno confirmed use
EPSStop 1%among the most likely CVEs to be exploited
severity9.8CVSS 3.1 · critical
US federal due24 Jan 2022BOD 22-01 deadline

What it is

A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation.

VendorHikvision (2 exploited CVEs in KEV)
ProductSecurity cameras web server
VulnerabilityHikvision Improper Input Validation
WeaknessCWE-78
Published22 Sep 2021
Added to KEV10 Jan 2022
Reported by (CNA)hikvision

What to do

  1. Check whether you run it. Look for Security cameras web server in your asset inventory, including appliances and cloud images. Stack check lists every exploited Hikvision CVE at once.
  2. Apply the fix. Apply updates per vendor instructions.
  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 22 Sep 2021.
  4. Get told next time. Email alerts when CISA adds a CVE for Hikvision.

References

Questions

Is CVE-2021-36260 being exploited?

Yes. CISA added CVE-2021-36260 to the Known Exploited Vulnerabilities catalog on 10 Jan 2022, which means there is reliable evidence of exploitation in the wild.

Is CVE-2021-36260 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-2021-36260?

Apply updates per vendor instructions. Check Hikvision's advisory for the fixed versions, and if you can't patch quickly, restrict access to the affected Security cameras web server 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 January 2022 · Hikvision scorecard · act-now radar.

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