ReviewHigh

CVE-2026-62871

Microsoft .NET 8.0, .NET 9.0, Microsoft Visual Studio 2022 version 17.14

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability-

Technical severityCVSS 7.8

Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

Product: Microsoft .NET 8.0, .NET 9.0, Microsoft Visual Studio 2022 version 17.14
Affected versions: >= 8.0.0 < 8.0.30, >= 9.0.0 < 9.0.19, >= 17.14.0 < 17.14.38, >= 18.0 < 18.8.3, >= 10.0.0 < 10.0.11, >= 18.8.0 < 18.8.3
Fixed versions: 8.0.30, 9.0.19, 10.0.11, 17.14.38, 18.8.3

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft .NET 8.0, .NET 9.0, Microsoft Visual Studio 2022 version 17.14 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.