OnlyPatch
.NET Framework

CVE-2026-62897 — .NET Framework Remote Code Execution Vulnerability

Important CVSS 7 EPSS 0.00336 2026-08 archive

Executive Summary

Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to execute code locally.

Overview

7
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Remote Code Execution
Released Aug 11 2026
Last Updated Aug 11 2026
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.00336 — 0.26427 percentile
NVD CVSS 7 HIGH — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
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: 6.1

EPSS Score

0.00336
probability of exploitation in the next 30 days
0.26427 percentile - updated 2026-08-14
View on FIRST.org

Affected Products

17 affected products
Product KB Article Severity Impact Restart Required
.NET 10.0 installed on Linux 5122106 (Security Update) Important Remote Code Execution Maybe
.NET 10.0 installed on Mac OS 5122106 (Security Update) Important Remote Code Execution Maybe
.NET 10.0 installed on Windows 5122106 (Security Update) Important Remote Code Execution Maybe
.NET 8.0 installed on Linux 5122104 (Security Update) Important Remote Code Execution Maybe
.NET 8.0 installed on Mac OS 5122104 (Security Update) Important Remote Code Execution Maybe
.NET 8.0 installed on Windows 5122104 (Security Update) Important Remote Code Execution Maybe
.NET 9.0 installed on Linux 5122105 (Security Update) Important Remote Code Execution Maybe
.NET 9.0 installed on Mac OS 5122105 (Security Update) Important Remote Code Execution Maybe
.NET 9.0 installed on Windows 5122105 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems 5120698 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems 5120703 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 on Windows 11 Version 26H1 for ARM64-based Systems 5120747 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 3.5 on Windows 11 version 26H1 for x64-based Systems 5120747 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 11 Version 26H1 for ARM64-based Systems 5120711 (Security Update) Important Remote Code Execution Maybe
Microsoft .NET Framework 4.8.1 on Windows 11 version 26H1 for x64-based Systems 5120711 (Security Update) Important Remote Code Execution Maybe
Microsoft Visual Studio 2022 version 17.14 (Security Update) Important Remote Code Execution Unknown
Microsoft Visual Studio 2026 version 18.8 (Security Update) Important Remote Code Execution Unknown

Patches

8 patches
Article Type Restart
5122106 Security Update Maybe
5122104 Security Update Maybe
5122105 Security Update Maybe
5120698 Security Update Maybe
5120703 Security Update Maybe
5120747 Security Update Maybe
5120711 Security Update Maybe
Security Update Unknown

Known Exploits

Acknowledgments

Ky0toFu
41ae55e9310ff27fa6f26af4727e5590

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