CVE-2021-34458
9.9
CRITICAL · CVSS 3.1 · EPSS 2.6% (pctl 85)
In your normal cycle
Critical by CVSS (9.9), but no sign of active exploitation.
Description
Windows Kernel Remote Code Execution Vulnerability
Scoring
| CVSS | 9.9 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| EPSS | 2.63% — more likely to be exploited than 85% of all CVEs |
| On CISA KEV | no |
| Public exploit | none known |
| Published | 2021-07-16 |
| Last modified | 2026-08-10 |
Affected (2)
| Vendor | Product |
|---|---|
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
References
→ the Explorer · watch your stack · NVD