July 2026 Patch Tuesday: what Security and IT teams should prioritise
July 2026 Patch Tuesday is now available in the canonical BlackTree Patch Intelligence catalogue. The current bounded cohort covers Microsoft, Adobe and SAP. This is not a claim of unlimited vendor coverage.
The operational queue contains 135 approved patch records linked to 682 unique CVEs. BlackTree currently marks 12 records for an accelerated or out-of-band assessment. BlackTree urgency is separate from vendor severity, CVSS and EPSS.
Security teams should start with confirmed exploitation and exposed control-plane systems. IT administrators should then review applicability, prerequisites, restart impact, sequencing, known issues and rollback guidance on each patch detail page.
Most important Microsoft patches this month
The following fixes deserve early attention based on confirmed exploitation, public disclosure, attack path and technical impact. Applicability still depends on the products and roles deployed in each environment.
- CVE-2026-58644: Microsoft SharePoint Remote Code Execution Vulnerability Microsoft marked exploitation as detected when the update shipped. Its CVSS vector describes a network attack that needs neither privileges nor user interaction. Critical, CVSS 9.8.
- CVE-2026-56164: Microsoft SharePoint Server Elevation of Privilege Vulnerability Microsoft marked exploitation as detected when the update shipped. Its CVSS vector describes a network attack that needs neither privileges nor user interaction. Moderate, CVSS 5.3.
- CVE-2026-56155: Active Directory Federation Services Elevation of Privilege Vulnerability Microsoft marked exploitation as detected when the update shipped. This is most relevant after an attacker has already gained a foothold on a Windows system. Important, CVSS 7.8.
- CVE-2026-50518: Windows DHCP Server Remote Code Execution Vulnerability Its CVSS vector describes a network attack that needs neither privileges nor user interaction. Critical, CVSS 9.8.
Open the canonical July 2026 Patch Tuesday action queue on cve.blacktree.nl.
Patch details and exploitation assessments were checked against the Microsoft Security Update Guide release data for July 2026.
Editorial article generated from approved catalogue data. Recheck the canonical cycle for later vendor revisions or BlackTree corrections.
