CVE-2026-58641 — HIGH (7.8)

Q: What is CVE-2026-58641?

CVE-2026-58641 is a vulnerability with a CVSS score of 7.8 (HIGH). Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.

Q: How severe is CVE-2026-58641?

CVE-2026-58641 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-2026-58641?

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

Vulnerability Description

Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges 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
Microsoft	Windows	-
Apple	Macos	-
Linux	Linux Kernel	-

Related Weaknesses (CWE)

CWE-190

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58641Vendor Advisory

FAQ

What is CVE-2026-58641?

CVE-2026-58641 is a vulnerability with a CVSS score of 7.8 (HIGH). Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.

How severe is CVE-2026-58641?

CVE-2026-58641 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-2026-58641?

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