CVE-2021-36260

Name: CVE-2021-36260
Creator: NVD / NIST
Published: 2021-09-22T13:15:07.69+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.87%

Last modified Jun 17, 2026

CVE-2021-36260 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.87% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

99.87%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Jan 24, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Hikvision	Ds-2cd2026g2-Iu\/Sl Firmware	All versions
Hikvision	Ds-2cd2046g2-Iu\/Sl Firmware	All versions
Hikvision	Ds-2cd2066g2-I\(U\) Firmware	All versions
Hikvision	Ds-2cd2066g2-Iu\/Sl Firmware	All versions
Hikvision	Ds-2cd2086g2-I\(U\) Firmware	All versions
Hikvision	Ds-2cd2086g2-Iu\/Sl Firmware	All versions
Hikvision	Ds-2cd2166g2-I\(Su\) Firmware	All versions
Hikvision	Ds-2cd2186g2-I\(Su\) Firmware	All versions
Hikvision	Ds-2cd2186g2-Isu Firmware	All versions
Hikvision	Ds-2cd2326g2-Isu\/Sl Firmware	All versions
Hikvision	Ds-2cd2346g2-Isu\/Sl Firmware	All versions
Hikvision	Ds-2cd2366g2-I\(U\) Firmware	All versions
Hikvision	Ds-2cd2366g2-Isu\/Sl Firmware	All versions
Hikvision	Ds-2cd2386g2-I\(U\) Firmware	All versions
Hikvision	Ds-2cd2386g2-Isu\/Sl Firmware	All versions
Hikvision	Ds-2cd2426g2-I Firmware	All versions
Hikvision	Ds-2cd2446g2-I Firmware	All versions
Hikvision	Ds-2cd2526g2-I\(S\) Firmware	All versions
Hikvision	Ds-2cd2526g2-Is Firmware	All versions
Hikvision	Ds-2cd2546g2-I\(S\) Firmware	All versions
Hikvision	Ds-2cd2566g2-I\(S\) Firmware	All versions
Hikvision	Ds-2cd2586g2-I\(S\) Firmware	All versions
Hikvision	Ds-2cd2626g2-Izsu\/Sl Firmware	All versions
Hikvision	Ds-2cd2646g2-Izsu\/Sl Firmware	All versions
Hikvision	Ds-2cd2666g2-Izs Firmware	All versions
Hikvision	Ds-2cd2666g2-Izsu\/Sl Firmware	All versions
Hikvision	Ds-2cd2686g2-Izs Firmware	All versions
Hikvision	Ds-2cd2686g2-Izsu\/Sl Firmware	All versions
Hikvision	Ds-2cd2766g2-Izs Firmware	All versions
Hikvision	Ds-2cd2786g2-Izs Firmware	All versions
Hikvision	Ds-2cd2027g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2047g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2027g2-Lu\/Sl Firmware	All versions
Hikvision	Ds-2cd2087g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2127g2-\(-Su\) Firmware	All versions
Hikvision	Ds-2cd2147g2-L\(Su\) Firmware	All versions
Hikvision	Ds-2cd2327g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2347g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2347g2-Lsu\/Sl Firmware	All versions
Hikvision	Ds-2cd2387g2-L\(U\) Firmware	All versions
Hikvision	Ds-2cd2527g2-Ls Firmware	All versions
Hikvision	Ds-2cd2547g2-Ls Firmware	All versions
Hikvision	Ds-2cd2547g2-Lzs Firmware	All versions
Hikvision	Ds-2cd2121g0-I\(W\)\(S\) Firmware	All versions
Hikvision	Ds-2cd2321g0-I\/Nf Firmware	All versions
Hikvision	Ds-2cd2421g0-I\(D\)\(W\) Firmware	All versions
Hikvision	Ds-2cd2421g0-I\(D\)W Firmware	All versions
Hikvision	Ds-2cd2621g0-I\(Z\)\(S\) Firmware	All versions
Hikvision	Ds-2cd2721g0-I\(Z\)\(S\) Firmware	All versions
Hikvision	Ds-2cd2121g1-I\(W\) Firmware	All versions

Showing 50 of 256 affected configurations. See NVD for the full list.

References

http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/Third Party Advisory
https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdfBroken Link, Exploit, Third Party Advisory
https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/Vendor Advisory
http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/Third Party Advisory
https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdfBroken Link, Exploit, Third Party Advisory
https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36260US Government Resource

Timeline

Published: Sep 22, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-36260?

How severe is CVE-2021-36260?

CVE-2021-36260 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.87% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-36260?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36260?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST