Coverage › CVE-2021-21985
CVE-2021-21985 Unmapped
VMware vCenter Server Improper Input Validation Vulnerability
- Vendor / product
- VMware — vCenter Server
- Description (CISA)
- VMware vSphere Client contains an improper input validation vulnerability in the Virtual SAN Health Check plug-in, which is enabled by default in vCenter Server, which allows for remote code execution.
- Added to KEV
- 2021-11-03
- Due date
- 2021-11-17
- Required action
- Apply updates per vendor instructions.
- Known ransomware use
- Known
- CWE
- CWE-20, CWE-470, CWE-918
- CISA notes
- https://nvd.nist.gov/vuln/detail/CVE-2021-21985
- Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2021-21985. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-20, CWE-470, CWE-918) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.