CVE-2021-26892
Low
No strong exploitation signal.
CVSS base
6.2
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS — probability of exploitation (30 days)
1.2%
66.7th percentile
CISA KEV
Not listed
Weakness / dates
—
Published 2021-03-11 · modified 2026-08-19
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | N | None |
| Integrity | H | High |
| Availability | N | None |
Timeline
- 2021-03-11 — Published (NVD)
- 2026-08-19 — Last modified (NVD)
Description
Windows Extensible Firmware Interface Security Feature Bypass Vulnerability