CVE-2026-35433

.NET Elevation of Privilege Vulnerability

State: Published
Severity: 7.3 High
Published: May 12, 2026
Updated: Aug 10, 2026
Reserved: Apr 2, 2026

Description

Improper input validation in .NET allows an unauthorized attacker to elevate privileges locally.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C	microsoft
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L	redhat-SADP

Weaknesses

CWE-20 Improper Input Validation
CWE-190 Integer Overflow or Wraparound

Affected Products

Product	Versions
.NET 10.0Microsoft	10.0.0 to before 10.0.8Affected
.NET 8.0Microsoft	8.0.0 to before 8.0.27Affected
.NET 9.0Microsoft	9.0.0 to before 9.0.16Affected
Microsoft .NET Framework 3.5Microsoft	3.5.0 to before 4.8.9334.0 and 4.8.4802.0Affected
Microsoft .NET Framework 3.5 AND 4.7.2Microsoft	4.7.0 to before 4.8.9334.0 and 4.8.4802.0Affected
Microsoft .NET Framework 3.5 AND 4.8Microsoft	4.8.0 to before 4.8.9334.0 and 4.8.4802.0Affected
Microsoft .NET Framework 3.5 AND 4.8.1Microsoft	4.8.1 to before 4.8.9334.0 and 4.8.4802.0Affected
Microsoft .NET Framework 4.8Microsoft	4.8.0 to before 4.8.9334.0 and 4.8.4802.0Affected

References

.NET Elevation of Privilege Vulnerabilityvendor-advisorypatch
https://access.redhat.com/security/cve/CVE-2026-35433vdb-entry
RHBZ#2476577issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-35433.json

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