CVE-2026-62871 — HIGH (7.8)

Q: What is CVE-2026-62871?

CVE-2026-62871 is a vulnerability with a CVSS score of 7.8 (HIGH). Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

Q: How severe is CVE-2026-62871?

CVE-2026-62871 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-62871?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft .Net, Apple Macos, Linux Linux Kernel, Microsoft Windows, Microsoft Visual Studio 2022.

Vulnerability Description

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

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Microsoft	.Net	>= 8.0.0, < 8.0.30
Apple	Macos	-
Linux	Linux Kernel	-
Microsoft	Windows	-
Microsoft	Visual Studio 2022	>= 17.14.0, < 17.14.38
Microsoft	Visual Studio 2026	>= 18.8.0, < 18.8.3

Related Weaknesses (CWE)

CWE-122 CWE-787

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62871PatchVendor Advisory

FAQ

What is CVE-2026-62871?

CVE-2026-62871 is a vulnerability with a CVSS score of 7.8 (HIGH). Out-of-bounds write in .NET allows an unauthorized attacker to execute code locally.

How severe is CVE-2026-62871?

CVE-2026-62871 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-62871?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft .Net, Apple Macos, Linux Linux Kernel, Microsoft Windows, Microsoft Visual Studio 2022.