59/59 sources · synced 00:50 UTC Customize Public mode
KB5123301

Security update fixing 10 CVEs

Support article Update Catalog CVEs in Security CVE list for a ticket
0Windows versions
10CVEs fixed · 1 critical
0Exploited or in CISA KEV
0Open known issues affecting it
—Restart required (per MSRC)

Known issues in this update

Windows release health

No known issues listed

Windows release health lists no issues from this KB or the update it builds on.

Issues this update resolves

No resolved issues listed

Windows release health names no issues fixed by this KB.

Security fixes

10 Microsoft CVEs · most urgent first
CVE Vulnerability Severity CVSSEPSSImpact Status
CVE-2026-66302 Skype for Business Remote Code Execution VulnerabilitySkype for Business Critical 9.81.0%Remote Code Execution
CVE-2026-69646 Skype for Business Spoofing VulnerabilitySkype for Business Important 8.30.3%Spoofing
CVE-2026-66304 Skype for Business Information Disclosure VulnerabilitySkype for Business Important 7.51.0%Information Disclosure
CVE-2026-66307 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 7.51.2%Denial of Service
CVE-2026-66305 Skype for Business Spoofing VulnerabilitySkype for Business Important 7.10.5%Spoofing
CVE-2026-63523 Skype for Business Spoofing VulnerabilitySkype for Business Important 6.50.6%Spoofing
CVE-2026-66303 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 6.51.1%Denial of Service
CVE-2026-66306 Skype for Business Information Disclosure VulnerabilitySkype for Business Important 6.50.9%Information Disclosure
CVE-2026-66308 Skype for Business and Lync Denial of Service VulnerabilitySkype for Business Important 6.51.1%Denial of Service
CVE-2026-69642 Skype for Business Spoofing VulnerabilitySkype for Business Important 6.50.4%Spoofing
ChangeIntel is an independent tool and is not affiliated with or endorsed by Microsoft. Microsoft, Windows, Microsoft 365, Azure, and related names are trademarks of the Microsoft group of companies. Data comes from public sources listed on Sources; every item links to its original page. Dates and statuses can change after they are read. Built by Evotec. This is the public demo. It can also run on your own server, with your Microsoft 365 tenant and device data kept inside your network; Evotec can help you deploy and extend it.