CVE-2021-26431

high

Description

Windows Recovery Environment Agent Elevation of Privilege Vulnerability

References

https://www.zerodayinitiative.com/advisories/ZDI-21-1053/

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26431

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26431

Details

Source: Mitre, NVD

Published: 2021-08-12

Updated: 2026-08-10

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.00406