CVE-2021-36260
RCE in Hikvision Ds-2Cd2121G1-Idw Firmware
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2021-36260 is a critical-severity OS Command Injection (CWE-78) vulnerability in Hikvision Ds-2Cd2121G1-Idw Firmware. Its CVSS base score is 9.8 (Critical).
Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 0.0% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.
Deeper analysis AI-assisted summary
Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.
A command injection vulnerability tracked as CVE-2021-36260 affects the web server component in certain Hikvision products. The flaw stems from insufficient input validation (CWE-78) that allows specially crafted messages containing malicious commands to be processed, resulting in a CVSS 3.1 base score of 9.8.
An unauthenticated attacker with network access can send crafted HTTP requests to the web server and execute arbitrary operating-system commands. Successful exploitation grants full confidentiality, integrity, and availability impact, enabling remote code execution without user interaction or credentials.
The official Hikvision security advisory lists affected firmware versions and provides remediation guidance, while public exploit code on Packet Storm and reports of widespread in-the-wild exploitation confirm active targeting of exposed devices.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-22880
Vulnerability Data
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.
- CWE(s)
- KEV Date Added
- 10 January 2022
Related Threats
Threat-Actor AttributionAI
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V1.2.5V1.2.8
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.
Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.