{"id":"CVE-2021-36260","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-36260","generatedAt":"2026-10-31T14:15:25.528Z","title":"Hikvision Improper Input Validation","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":"2021-09-22T13:15:08.000Z","lastModified":"2026-06-17T03:58:34.000Z","status":"Analyzed","sourceIdentifier":"hsrc@hikvision.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-78"],"affected":["hikvision/ds-2cd2026g2-iu\\/sl firmware","hikvision/ds-2cd2046g2-iu\\/sl firmware","hikvision/ds-2cd2066g2-i\\(u\\) firmware","hikvision/ds-2cd2066g2-iu\\/sl firmware","hikvision/ds-2cd2086g2-i\\(u\\) firmware","hikvision/ds-2cd2086g2-iu\\/sl firmware","hikvision/ds-2cd2166g2-i\\(su\\) firmware","hikvision/ds-2cd2186g2-i\\(su\\) firmware","hikvision/ds-2cd2186g2-isu firmware","hikvision/ds-2cd2326g2-isu\\/sl firmware","hikvision/ds-2cd2346g2-isu\\/sl firmware","hikvision/ds-2cd2366g2-i\\(u\\) firmware","hikvision/ds-2cd2366g2-isu\\/sl firmware","hikvision/ds-2cd2386g2-i\\(u\\) firmware","hikvision/ds-2cd2386g2-isu\\/sl firmware","hikvision/ds-2cd2426g2-i firmware","hikvision/ds-2cd2446g2-i firmware","hikvision/ds-2cd2526g2-i\\(s\\) firmware","hikvision/ds-2cd2526g2-is firmware","hikvision/ds-2cd2546g2-i\\(s\\) firmware","hikvision/ds-2cd2566g2-i\\(s\\) firmware","hikvision/ds-2cd2586g2-i\\(s\\) firmware","hikvision/ds-2cd2626g2-izsu\\/sl firmware","hikvision/ds-2cd2646g2-izsu\\/sl firmware","hikvision/ds-2cd2666g2-izs firmware","hikvision/ds-2cd2666g2-izsu\\/sl firmware","hikvision/ds-2cd2686g2-izs firmware","hikvision/ds-2cd2686g2-izsu\\/sl firmware","hikvision/ds-2cd2766g2-izs firmware","hikvision/ds-2cd2786g2-izs firmware","hikvision/ds-2cd2027g2-l\\(u\\) firmware","hikvision/ds-2cd2047g2-l\\(u\\) firmware","hikvision/ds-2cd2027g2-lu\\/sl firmware","hikvision/ds-2cd2087g2-l\\(u\\) firmware","hikvision/ds-2cd2127g2-\\(-su\\) firmware","hikvision/ds-2cd2147g2-l\\(su\\) firmware","hikvision/ds-2cd2327g2-l\\(u\\) firmware","hikvision/ds-2cd2347g2-l\\(u\\) firmware","hikvision/ds-2cd2347g2-lsu\\/sl firmware","hikvision/ds-2cd2387g2-l\\(u\\) firmware","hikvision/ds-2cd2527g2-ls firmware","hikvision/ds-2cd2547g2-ls firmware","hikvision/ds-2cd2547g2-lzs firmware","hikvision/ds-2cd2121g0-i\\(w\\)\\(s\\) firmware","hikvision/ds-2cd2321g0-i\\/nf firmware","hikvision/ds-2cd2421g0-i\\(d\\)\\(w\\) firmware","hikvision/ds-2cd2421g0-i\\(d\\)w firmware","hikvision/ds-2cd2621g0-i\\(z\\)\\(s\\) firmware","hikvision/ds-2cd2721g0-i\\(z\\)\\(s\\) firmware","hikvision/ds-2cd2121g1-i\\(w\\) firmware","hikvision/ds-2cd2121g1 firmware","hikvision/ds-2cd2121g1-idw firmware","hikvision/ds-2cd2023g2-i\\(u\\) firmware","hikvision/ds-2cd2043g2-i\\(u\\) firmware","hikvision/ds-2cd2063g2-i\\(u\\) firmware","hikvision/ds-2cd2083g2-i\\(u\\) firmware","hikvision/ds-2cd2123g2-i\\(s\\) firmware","hikvision/ds-2cd2123g2-iu firmware","hikvision/ds-2cd2143g2-i\\(s\\) firmware","hikvision/ds-2cd2143g2-iu firmware"],"epss":{"score":0.99869,"percentile":0.99963,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-01-10","dueDate":"2022-01-24","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-36260"},"exploits":{"count":1,"verified":false,"firstPublished":"2021-10-25","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":50441,"kind":"exploit","title":"Hikvision Web Server Build 210702 - Command Injection","url":"https://www.exploit-db.com/exploits/50441","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/hardware/webapps/50441.py","file":"exploits/hardware/webapps/50441.py","published":"2021-10-25","added":"2021-10-25","updated":"2021-10-25","author":"bashis","type":"webapps","platform":"hardware","port":null,"verified":false,"codes":["CVE-2021-36260"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 January 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"hsrc@hikvision.com"},{"url":"http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"hsrc@hikvision.com"},{"url":"https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/","tags":["Third Party Advisory"],"source":"hsrc@hikvision.com"},{"url":"https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf","tags":["Broken Link","Exploit","Third Party Advisory"],"source":"hsrc@hikvision.com"},{"url":"https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/","tags":["Vendor Advisory"],"source":"hsrc@hikvision.com"},{"url":"http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdf","tags":["Broken Link","Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36260","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-36260","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}