{"cve":"CVE-2021-36260","nvd":{"published":"2021-09-22T13:15:07.690","modified":"2026-06-17T03:58:34.080","status":"Analyzed","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-78"],"references":["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://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/","https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf","https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/"],"products":["hikvision:ds-2cd2021g1-i\\(w\\)_firmware","hikvision:ds-2cd2023g2-i\\(u\\)_firmware","hikvision:ds-2cd2026g2-iu\\/sl_firmware","hikvision:ds-2cd2027g2-l\\(u\\)_firmware","hikvision:ds-2cd2027g2-lu\\/sl_firmware","hikvision:ds-2cd2043g2-i\\(u\\)_firmware","hikvision:ds-2cd2046g2-iu\\/sl_firmware","hikvision:ds-2cd2047g2-l\\(u\\)_firmware","hikvision:ds-2cd2063g2-i\\(u\\)_firmware","hikvision:ds-2cd2066g2-i\\(u\\)_firmware","hikvision:ds-2cd2066g2-iu\\/sl_firmware","hikvision:ds-2cd2083g2-i\\(u\\)_firmware","hikvision:ds-2cd2086g2-i\\(u\\)_firmware","hikvision:ds-2cd2086g2-iu\\/sl_firmware","hikvision:ds-2cd2087g2-l\\(u\\)_firmware","hikvision:ds-2cd2121g0-i\\(w\\)\\(s\\)_firmware","hikvision:ds-2cd2121g1-i\\(w\\)_firmware","hikvision:ds-2cd2121g1-idw_firmware","hikvision:ds-2cd2121g1_firmware","hikvision:ds-2cd2123g2-i\\(s\\)_firmware","hikvision:ds-2cd2123g2-iu_firmware","hikvision:ds-2cd2127g2-\\(-su\\)_firmware","hikvision:ds-2cd2143g2-i\\(s\\)_firmware","hikvision:ds-2cd2143g2-iu_firmware","hikvision:ds-2cd2147g2-l\\(su\\)_firmware","hikvision:ds-2cd2163g2-i\\(s\\)_firmware","hikvision:ds-2cd2163g2-iu_firmware","hikvision:ds-2cd2166g2-i\\(su\\)_firmware","hikvision:ds-2cd2183g2-i\\(s\\)_firmware","hikvision:ds-2cd2183g2-i\\(u\\)_firmware","hikvision:ds-2cd2183g2-iu_firmware","hikvision:ds-2cd2186g2-i\\(su\\)_firmware","hikvision:ds-2cd2186g2-isu_firmware","hikvision:ds-2cd2321g0-i\\/nf_firmware","hikvision:ds-2cd2323g2-i\\(u\\)_firmware","hikvision:ds-2cd2326g2-isu\\/sl_firmware","hikvision:ds-2cd2327g2-l\\(u\\)_firmware","hikvision:ds-2cd2343g2-i\\(u\\)_firmware","hikvision:ds-2cd2346g2-isu\\/sl_firmware","hikvision:ds-2cd2347g2-l\\(u\\)_firmware","hikvision:ds-2cd2347g2-lsu\\/sl_firmware","hikvision:ds-2cd2363g2-i\\(u\\)_firmware","hikvision:ds-2cd2366g2-i\\(u\\)_firmware","hikvision:ds-2cd2366g2-isu\\/sl_firmware","hikvision:ds-2cd2383g2-i\\(u\\)_firmware","hikvision:ds-2cd2386g2-i\\(u\\)_firmware","hikvision:ds-2cd2386g2-isu\\/sl_firmware","hikvision:ds-2cd2387g2-l\\(u\\)_firmware","hikvision:ds-2cd2421g0-i\\(d\\)\\(w\\)_firmware","hikvision:ds-2cd2421g0-i\\(d\\)w_firmware"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-36260","score":0.99869,"percentile":0.99963,"date":"2026-10-31"},"kev":{"cve":"CVE-2021-36260","date_added":"2022-01-10","due_date":"2022-01-24","vendor":"Hikvision","product":"Security cameras web server","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}