CVE-2026-83798

Published: Oct 13, 2026Modified: Oct 16, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: secure@microsoft.com (Secondary)

Description

Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.

Related CWEs

Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83798

Source: secure@microsoft.com

Timeline

No history available yet.