CVE-2021-36260 — Hikvision Improper Input Validation

A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious commands.

01What is this vulnerability?

A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation, attacker can exploit the vulnerability to launch a command injection attack by sending some messages with malicious commands.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-01-10. Ransomware use: Unknown.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2021-09-22T12:07:55.000Z
• Last modified: 2025-10-21T23:25:31.943Z
• Added to CISA KEV: 2022-01-10
• BOD 22-01 due: 2022-01-24

09References

• www.hikvision.com — https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-no…
• packetstormsecurity.com — http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Co…
• packetstormsecurity.com — http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-…
• www.cyfirma.com — https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasV…
• therecord.media — https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvis…