EUVD Vulnerability Catalog Actively Exploited (KEV)

EUVD-2026-63693

Severity: CRITICAL Base Score: 10 CVSS Version: 3.1

Vulnerability Description

Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/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): Low

▪ 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

1.37

Known Aliases

CVE-2026-69836 GHSA-v6wh-624g-vvmv

Published On

2026-08-20

Last Updated

2026-08-22

Exploited Since

2026-08-21