KB5129956: CVEs fixed (Windows update (KB))

KB5129956 fixes 1 tracked CVE. Affected systems and fixed versions.

• CVE-2026-96940 HIGH 8.8 DOWNGRADE UPGRADE Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a ne

Applies to

• Microsoft Exchange Server 2019 Cumulative Update 15 · fixed in 15.02.1748.053

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