Mmastodon TechnologyCybersecurity first seen 4 d ago, last 4 d ago, peak #5

New SharePoint vulnerability rated 7.4 disclosed

Original: 🚨 EUVD-2026-100403 📊 Score: 7.4/10 (CVSS v3.1) 📦 Product: Microsoft SharePoint Server Subscription Edition 🏢 Vendor: Mic

A security flaw tracked as EUVD-2026-100403 has been catalogued in Microsoft SharePoint Server Subscription Edition. The issue involves deserialization of untrusted data, which could let an authorized attacker execute arbitrary code remotely. The flaw carries a CVSS v3.1 score of 7.4, placing it in the high-severity range, and its entry was updated on 13 October 2026. Administrators of SharePoint deployments are being urged to review the advisory and apply patches as Microsoft releases them.

Why now: Organizations running SharePoint monitor newly disclosed high-severity remote code execution vulnerabilities to assess patching urgency.

MicrosoftSharePoint Server Subscription EditionEUVD-2026-100403

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Evidence

• 🚨 EUVD-2026-100403 📊 Score: 7.4/10 (CVSS v3.1) 📦 Product: Microsoft SharePoint Server Subscription Edition 🏢 Vendor: Microsoft 📅 Updated: 2026-10-13 📝 Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.… · EUVD_Bot

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