OnlyFm252
.NET Framework

CVE-2022-26929 — .NET Framework Remote Code Execution Vulnerability

Important CVSS 7.8 EPSS 0.01284 2022-09 archive

Executive Summary

None

Overview

7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Sep 13 2022
Last Updated Sep 13 2022
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.01284 — 0.66335 percentile
NVD CVSS 7.8 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.8

EPSS Score

0.01284
probability of exploitation in the next 30 days
0.66335 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

12 affected products
Product KB Article Severity Impact Restart Required
Microsoft .NET Framework 3.5 AND 4.6/4.6.2 on Windows 10 for 32-bit Systems 5017327 (Security Update) Important Remote Code Execution Yes
Microsoft .NET Framework 3.5 AND 4.6/4.6.2 on Windows 10 for x64-based Systems 5017327 (Security Update) Important Remote Code Execution Yes
Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for ARM64-based Systems 5017497 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 version 21H2 for x64-based Systems 5017497 (Security Update) Important Remote Code Execution Unknown
Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 5017501 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022 (Server Core installation) 5017501 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H1 for 32-bit Systems 5017499 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H1 for ARM64-based Systems 5017499 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H1 for x64-based Systems 5017499 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems 5017500 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems 5017500 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 10 Version 21H2 for x64-based Systems 5017500 (Security Update) Important Remote Code Execution Maybe

Patches

5 patches
Article Type Restart
5017327 Security Update Yes
5017497 Security Update Maybe
5017501 Security Update Maybe
5017499 Security Update Maybe
5017500 Security Update Maybe

Known Exploits

Acknowledgments

Eran Zimmerman Gonen

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