Critical 9.8Known exploited (CISA KEV)Published Sep 22, 2021

CVE-2021-36260A command injection vulnerability in the web server of some Hikvision product.

Updated under an hour ago (Oct 27, 2026, 11:20 AM ET)

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It affects hikvision ds-2cd2026g2-iu/sl_firmware and 59 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jan 10, 2022; federal agencies had to remediate by Jan 24, 2022. Treat that date as your deadline.

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Every CVE for hikvision ds-2cd2026g2-iu/sl_firmware

Exploited in the last 30 days

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.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Added to CISA KEV Jan 10, 2022; federal remediation due Jan 24, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 99.87% (percentile 100)
Assigned by: hikvision
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

hikvision ds-2cd2026g2-iu/sl_firmware hikvision:ds-2cd2026g2-iu/sl_firmware	all versions	NVD
hikvision ds-2cd2046g2-iu/sl_firmware hikvision:ds-2cd2046g2-iu/sl_firmware	all versions	NVD
hikvision ds-2cd2066g2-i(u)_firmware hikvision:ds-2cd2066g2-i(u)_firmware	all versions	NVD
hikvision ds-2cd2066g2-iu/sl_firmware hikvision:ds-2cd2066g2-iu/sl_firmware	all versions	NVD
hikvision ds-2cd2086g2-i(u)_firmware hikvision:ds-2cd2086g2-i(u)_firmware	all versions	NVD
hikvision ds-2cd2086g2-iu/sl_firmware hikvision:ds-2cd2086g2-iu/sl_firmware	all versions	NVD
hikvision ds-2cd2166g2-i(su)_firmware hikvision:ds-2cd2166g2-i(su)_firmware	all versions	NVD
hikvision ds-2cd2186g2-i(su)_firmware hikvision:ds-2cd2186g2-i(su)_firmware	all versions	NVD
hikvision ds-2cd2186g2-isu_firmware hikvision:ds-2cd2186g2-isu_firmware	all versions	NVD
hikvision ds-2cd2326g2-isu/sl_firmware hikvision:ds-2cd2326g2-isu/sl_firmware	all versions	NVD
1–10 of 60

References

References

https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/	x-refsource-misc, vendor-advisory
http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html	x-refsource-misc, exploit, third-party-advisory, vdb-entry
https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf	x-refsource-misc, broken-link, exploit, third-party-advisory
https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/	x-refsource-misc, third-party-advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36260	us-government-resource

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.