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ExploitedIn CISA KEV

CVE-2021-36260

Exploitation confirmed. First attested on 2022-01-10 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2021-09-22
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2021-09-2213:15CVE publishedNVD
  2. 2021-10-25Exploit-DB entryExploit-DB
  3. 2022-01-10Added to the CISA KEV catalogCISA KEV
  4. 2022-01-10Listed as exploited by GCVEGCVE
  5. 2022-01-10Exploitation first reportedCISA KEV
  6. 2025-02-0619:45SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 15:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-36260?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-36260?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Hikvision ds-2cd2021g1-i\(w\) firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Hikvision ds-2cd2023g2-i\(u\) firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Hikvision ds-2cd2026g2-iu\/sl firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

253 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-01-24

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-50441
Exploit-DB
Proof-of-concept repositories
14 repositories, unverifiedrabbitsafe/CVE-2021-36260Aiminsun/CVE-2021-36260TaroballzChen/CVE-2021-36260-metasploittuntin9x/CheckHKRCECuerz/CVE-2021-36260
PoC-in-GitHub
Metasploit modules
1 moduleexploit/linux/http/hikvision_cve_2021_36260_blindrank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-01-10
Patch Due Date
2022-01-24
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-09-22
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-v276-9v2g-hx55

Frequently asked questions

What is CVE-2021-36260?

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.

Is CVE-2021-36260 actively exploited?

Yes. CVE-2021-36260 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-01-24.

What is the CVSS score for CVE-2021-36260?

CVE-2021-36260 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Same product first, then the same vendor advisory and the same publication week.

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Sources for this record