VulnerabilityModified
CVE-2021-26431
Windows Recovery Environment Agent Elevation of Privilege Vulnerability
HIGH 7.8EPSS 1.17%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.17%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Windows Recovery Environment Agent Elevation of Privilege Vulnerability
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.17% probability · 66th percentile
- CISA KEV
- Not listed
- Affected
- microsoft/windows 10 · microsoft/windows server 2016
- Source
- secure@microsoft.com
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26431
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26431Patch, Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-21-1053/Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.