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Microsoft posts nearly 1,000 bugs for Patch Tuesday as CISA warns two being exploited
CISA confirms exploitation of two Windows zero-days among 973 Microsoft patches; 22,000 Exchange servers remain unpatched.
Microsoft's September Patch Tuesday sets a record with 973 vulnerabilities, and CISA confirms CVE-2026-81963 and CVE-2026-85880 are being exploited, giving federal agencies until September 22 to patch. Nightwing estimates over 22,000 corporate Exchange servers are unpatched against weaponized exploit code. Analysts describe CVE-2026-81963 as an early link in ransomware chains where phishing leads to privilege escalation, and note year-to-date Microsoft disclosures exceed 2,600 bugs.
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U.S. CISA adds Microsoft and Adobe flaws to its Known Exploited Vulnerabilities catalog
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Public PoC triggers active exploitation of critical SharePoint RCE vulnerability CVE-2026
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Microsoft SharePoint servers under attack via zero-day vulnerability (CVE-2025-53770)
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Week in review: Attackers exploiting VMware RCE, Microsoft fixes actively exploited zero-day
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Microsoft Condemns
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Microsoft Fixes Windows Defender Zero
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CISA adds Veeam Backup and Replication bugs to Known Exploited Vulnerabilities Catalog
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Microsoft addresses three Windows issues actively exploited
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