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Findings

CVE-2021-36260

Hikvision Improper Input Validation

Published Sep 22, 2021 · corrected/updated Jun 16, 2026 · hikvision ds-2cd2026g2-iu/sl firmware · evidence confidence very high

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.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

CVE-2021-36260 is a critical public vulnerability record for hikvision ds-2cd2026g2-iu/sl firmware. CISA lists it as known exploited. Published remediation guidance: Apply updates per vendor instructions. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether hikvision ds-2cd2026g2-iu/sl firmware is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: hikvision/ds-2cd2026g2-iu/sl firmware; hikvision/ds-2cd2046g2-iu/sl firmware; hikvision/ds-2cd2066g2-i(u) firmware; hikvision/ds-2cd2066g2-iu/sl firmware. Published remediation guidance: Apply updates per vendor instructions. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 9.8, EPSS 99.9%. CISA lists it as known exploited. Weakness classes: CWE-78. Sources contributing to this record: cisa_kev, cve_org, epss, exploitdb. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Confirmed in CISA KEV since Jan 10, 2022. Listed in the CISA Known Exploited Vulnerabilities catalog.

  • Patch and remediation

    Apply updates per vendor instructions. CISA due date Jan 24, 2022.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

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.

Affected

  • 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

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

References