EUVD Vulnerability Catalog Actively Exploited (KEV)

EUVD-2026-56431

Severity: HIGH Base Score: 8.8 CVSS Version: 3.1

Vulnerability Description

Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

CVSS Vector Analysis

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

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Privileges Required (PR): Low

▪ User Interaction (UI): None

▪ Scope (S): Unchanged

▪ Confidentiality Impact (C): High

▪ Integrity Impact (I): High

▪ Availability Impact (A): High

▪ E: Unchanged

▪ RL: O

▪ RC: Changed

Affected Vendors & Systems

Vendor Microsoft

References & Advisory Links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65660

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

microsoft

EPSS Probability

1.19

Known Aliases

CVE-2026-65660 GHSA-r94x-x846-rxqx

Published On

2026-08-11

Last Updated

2026-09-25

Exploited Since

2026-09-25