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Vulnerabilities

Vulnerability · CVE-2021-36260

Hikvision Improper Input Validation

Published Sep 22, 2021 · catalog updated Jun 16, 2026 · Hikvision Security cameras web server

Patch now

CVE-2021-36260 is in the CISA known-exploited catalog, due Jan 24, 2022. Confirm Hikvision Security cameras web server against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
99.87%
Remediation
Remediation guidance
Affected products
cpe hikvision/ds-2cd2026g2-iu/sl firmware · cpe hikvision/ds-2cd2046g2-iu/sl firmware · cpe hikvision/ds-2cd2066g2-i(u) firmware · cpe hikvision/ds-2cd2066g2-iu/sl firmware · cpe hikvision/ds-2cd2086g2-i(u) firmware · cpe hikvision/ds-2cd2086g2-iu/sl firmware

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe hikvision/ds-2cd2026g2-iu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2046g2-iu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2066g2-i(u) firmwareversion unspecified
  • cpe hikvision/ds-2cd2066g2-iu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2086g2-i(u) firmwareversion unspecified
  • cpe hikvision/ds-2cd2086g2-iu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2166g2-i(su) firmwareversion unspecified
  • cpe hikvision/ds-2cd2186g2-i(su) firmwareversion unspecified
  • cpe hikvision/ds-2cd2186g2-isu firmwareversion unspecified
  • cpe hikvision/ds-2cd2326g2-isu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2346g2-isu/sl firmwareversion unspecified
  • cpe hikvision/ds-2cd2366g2-i(u) firmwareversion unspecified
  • vendor Hikvision Security cameras web serverversion unspecified

How to fix CVE-2021-36260

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2021-36260 is in the CISA known-exploited catalog, due Jan 24, 2022. Confirm Hikvision Security cameras web server against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 99.87%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 22, 2021 · Catalog

    Detected

    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.

  2. Jan 10, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jan 24, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2021-36260

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2021-36260

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2021-36260

    30-day exploitation probability 99.9%

    first.org
  • Exploit DatabasePublic exploit reference50441

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit ModulesPublic exploit moduleexploit_linux/http/hikvision_cve_2021_36260_blind

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-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.

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • VulnCheck KEVConfirmed exploitationCVE-2021-36260

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.