OnlyFm252
Role: Windows Hyper-V

CVE-2022-23257 — Windows Hyper-V Remote Code Execution Vulnerability

Critical CVSS 8.8 EPSS 0.00599 2022-04 archive

Executive Summary

None

Overview

8.8
CVSS HIGH
Critical
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Apr 12 2022
Last Updated Apr 12 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00599 — 0.43948 percentile
NVD CVSS 8.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Changed
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 7.7

EPSS Score

0.00599
probability of exploitation in the next 30 days
0.43948 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

7 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 21H1 for x64-based Systems 5012599 (Security Update) Critical Remote Code Execution Yes
Windows 10 Version 21H2 for x64-based Systems 5012599 (Security Update) Critical Remote Code Execution Yes
Windows 11 version 21H2 for x64-based Systems 5012592 (Security Update) Critical Remote Code Execution Yes
Windows 11 Version 22H2 for x64-based Systems 5023706 (Security Update) Critical Remote Code Execution Yes
Windows Server 2022 5012604 (Security Update) Critical Remote Code Execution Yes
Windows Server 2022 (Server Core installation) 5012604 (Security Update) Critical Remote Code Execution Yes
Windows Server, version 20H2 (Server Core Installation) 5012599 (Security Update) Critical Remote Code Execution Yes

Patches

4 patches
Article Type Restart
5012599 Security Update Yes
5012592 Security Update Yes
5023706 Security Update Yes
5012604 Security Update Yes

Known Exploits

On This Page