CISA Adds Four Critical Vulnerabilities to KEV Catalog, Including macOS Flaw
Known exploited vulnerabilities affect Apple macOS, Microsoft SharePoint, VMware vCenter Server, and Microsoft IKE

Key Takeaways
- CISA added four critical vulnerabilities to its KEV catalog on August 19, 2026, citing active exploitation in the wild.
- The vulnerabilities affect Apple macOS, Microsoft SharePoint, VMware vCenter Server, and Microsoft IKE.
- CVE-2026-65400, an improper authentication flaw in macOS, carries a CVSS score of 9.8.
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