CyberSecurity News

Fourth SharePoint Vulnerability Exploited in Past Month’s Wave of Attacks

SecurityWeek

· July 22, 2026

AI summary

A recently exploited vulnerability, identified as CVE-2026-50522, is being used by threat actors to steal machine keys, allowing them to maintain long-term access. This vulnerability is the fourth in SharePoint to be exploited in a recent wave of attacks that have occurred over the past month.

Vulnerabilities mentioned

CVE-2026-50522

CRITICAL

CVSS 9.8

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

Read the full article at SecurityWeekwww.securityweek.com/fourth-sharepoint-vulnerability-exploited-in-past-months-wave-of-attacks/

This is an AI-generated brief aggregated by HackerFeeds for convenience and grounded in the source’s own summary; the related CVE, threat-group and country data is from HackerFeeds’ own indexes. The original article is the authoritative source — all rights belong to SecurityWeek.