CVE-2026-66805

HighCVSS 8.8/10Last modified Oct 21, 2026

Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

No affected versions have been published.

Timeline

Published
Aug 11, 2026
Last modified
Oct 21, 2026
NVD status
Analyzed

Related CVEs from 2026

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CVE-2026-66805: High severity, CVSS 8.8 | Vulnix