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Description

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

PUBLISHED Reserved 2026-04-02 | Published 2026-05-12 | Updated 2026-05-20 | Assigner microsoft




HIGH: 7.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L/E:U/RL:O/RC:C

Problem types

CWE-20: Improper Input Validation

CWE-190: Integer Overflow or Wraparound

Product status

10.0.0 (custom) before 10.0.8
affected

8.0.0 (custom) before 8.0.27
affected

9.0.0 (custom) before 9.0.16
affected

3.5.0 (custom) before 4.8.9334.0 and 4.8.4802.0
affected

4.7.0 (custom) before 4.8.9334.0 and 4.8.4802.0
affected

4.8.0 (custom) before 4.8.9334.0 and 4.8.4802.0
affected

4.8.1 (custom) before 4.8.9334.0 and 4.8.4802.0
affected

4.8.0 (custom) before 4.8.9334.0 and 4.8.4802.0
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35433 (.NET Elevation of Privilege Vulnerability) vendor-advisory patch

cve.org (CVE-2026-35433)

nvd.nist.gov (CVE-2026-35433)

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