EUVD Vulnerability Catalog

EUVD-2026-99528

Severity: CRITICAL Base Score: 9 CVSS Version: 3.1

Vulnerability Description

Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): High

▪ Privileges Required (PR): None

▪ User Interaction (UI): None

▪ Scope (S): Changed

▪ Confidentiality Impact (C): High

▪ Integrity Impact (I): High

▪ Availability Impact (A): High

▪ E: Unchanged

▪ RL: O

▪ RC: Changed

Vendor Microsoft

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

microsoft

EPSS Probability

0.42

Known Aliases

GHSA-7j3q-9qpw-gwc7 CVE-2026-85818

Published On

2026-10-13

Last Updated

2026-10-16