{"cve":{"cve_id":"CVE-2021-36260","is_kev":true,"kev_date_added":"2022-01-10","kev_vendor_project":"Hikvision","kev_product":"Security cameras web server","kev_vulnerability_name":"Hikvision Improper Input Validation","kev_short_description":"A command injection vulnerability in the web server of some Hikvision product. Due to the insufficient input validation.","kev_required_action":"Apply updates per vendor instructions.","kev_due_date":"2022-01-24","kev_known_ransomware":false,"kev_notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-36260","kev_cwes":["CWE-78"],"epss_score":0.99869,"epss_percentile":0.99961,"epss_as_of":"2026-06-23","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.","published_at":"2021-09-22T12:07:55Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-78"],"nvd_references":["https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/","http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html","http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html","https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf","https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-28T23:15:53.476779Z"},"effective_severity":"CRITICAL","badges":["kev","poc","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/workflows/hikvision-workflow.yaml","title":"Hikvision Security Checks","author":"pdteam","disclosed_at":null},{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/iot/hikvision-cam-info-exposure.yaml","title":"Hikvision IP Camera - Info Exposure","author":"AbdulrahmanTamim","disclosed_at":null},{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-36260.yaml","title":"Hikvision IP camera/NVR - Remote Command Execution","author":"pdteam,gy741,johnk3r","disclosed_at":null}],"news":[],"references":[{"url":"https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/","source_type":"MISC","tags":[]},{"url":"http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html","source_type":"EXPLOIT","tags":["exploit"]},{"url":"http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html","source_type":"EXPLOIT","tags":["exploit"]},{"url":"https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf","source_type":"MISC","tags":[]},{"url":"https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2021-09-22T12:07:55Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2022-01-10T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"ssvc_changed","at":"2026-06-24T00:31:44.034298Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:44.034298Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:31:44.034298Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:44.034298Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:44.034298Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:31:44.034298Z","label":"CVSS score revised","source":"vulnrichment"}]}