Patch Tuesday security updates for July 2026, the largest update ever. 621 CVEs in one month
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
CVE-2026-57092+2 related CVEs | Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network | 9.9 group max | <1% | ||
CVE-2026-58644+1 related CVE | Unauthenticated Deserialization RCE in Microsoft SharePoint Server | 9.8 | 16% | KEV | KEV |
| CVE-2026-55008 | Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform… | 9.6 | <1% | ||
| CVE-2026-56155 | Local Privilege Escalation in Microsoft Active Directory Federation Services | 7.8 | <1% | KEV | KEV |
| CVE-2026-56164 | Missing Authentication in Microsoft SharePoint Server Allows Privilege Escalation | 9.8 | 1% | KEV | KEV |
From the original article
3 min read at securityaffairs.com
Patch Tuesday: Microsoft fixes a record 621 CVEs, including 2 exploited zero-days and critical flaws affecting SharePoint, RDP, Hyper-V, and AD FS. Microsoft’s July 2026 Patch Tuesday is, by a significant margin, the largest single-month security release in the company’s history.
By @securityaffairs · securityaffairs.com
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