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CISA Urges Immediate Patching of Exploited Microsoft, VMware, Apple Vulnerabilities

SecurityWeekBy Ionut Arghire

Reported exploitedWindows IKESharePoint

Our summary

CISA has mandated immediate remediation for four active vulnerabilities across Microsoft, VMware, and Apple systems, adding them to the Known Exploited Vulnerabilities catalog. The alert covers CVE-2026-33824 in Windows IKE, CVE-2026-55040 in SharePoint, CVE-2026-59310 in VMware vCenter, and CVE-2026-65400 in macOS Screen Sharing. Federal agencies are required to apply patches by August 21 to mitigate these in-the-wild threats.

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  1. The Hacker NewsCritical macOS, SharePoint, vCenter, and Microsoft IKE Flaws Under Active ExploitationCVE-2026-33824, CVE-2026-55040 +2
  2. The Hacker News⚡ Weekly Recap: VMware Exploits, Windows 0-Day, MCP Attacks, Browser Hijacks and MoreCVE-2026-59310, CVE-2026-65400
  3. The Hacker NewsSharePoint Flaw Initially Listed as Spoofing by Microsoft Enables Authenticated RCECVE-2026-55040
  4. The Hacker News⚡ Weekly Recap: Cisco 0-Day, AI Agent RCE, ClickFix Attacks, ClickFix Surge, and Browser HijacksCVE-2026-65400
  5. The Hacker NewsThreatsDay: Self-Rewriting Agents, 800+ Flaws Patched, Insider SIM Swaps and 22 More New StoriesCVE-2026-59310
  6. BleepingComputerCISA: Critical VMware RCE flaw now exploited by ransomware gangsCVE-2026-59310
  7. SANS Internet Storm CenterApple Updates Everything - SANS Internet Storm CenterCVE-2026-65400
  8. The Hacker NewsCritical VMware Workstation and Fusion Flaw Lets VM Admins Execute Host CodeCVE-2026-59310
  9. Help Net SecuritySeptember 2026 Patch Tuesday forecast: All we need is more timeCVE-2026-55040
  10. The Hacker NewsThreatsDay: 296K IoT Botnet, 100+ Water Systems Targeted, SharePoint RCE Chain + 27 New StoriesCVE-2026-55040

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