CVE-2021-36260
Hikvision Improper Input Validation
Does this matter?
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.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 99.87% probability · 100th percentile
- Public exploits
- 1 in Exploit-DB · first 25 October 2021
- CISA KEV
- Listed 10 January 2022 · due 24 January 2022
- Weakness
- 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 · +40 more
- Source
- hsrc@hikvision.com
EPSS 99.9% since 30 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-36260
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/Third Party Advisory
- https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdfBroken Link, Exploit, Third Party Advisory
- https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/Vendor Advisory
- http://packetstormsecurity.com/files/164603/Hikvision-Web-Server-Build-210702-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/166167/Hikvision-IP-Camera-Unauthenticated-Command-Injection.htmlExploit, Third Party Advisory, VDB Entry
- https://therecord.media/experts-warn-of-widespread-exploitation-involving-hikvision-cameras/Third Party Advisory
- https://www.cyfirma.com/wp-content/uploads/2022/08/HikvisionSurveillanceCamerasVulnerabilities.pdfBroken Link, Exploit, Third Party Advisory
- https://www.hikvision.com/en/support/cybersecurity/security-advisory/security-notification-command-injection-vulnerability-in-some-hikvision-products/Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36260US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.