
π‘οΈ PRESIDENTIAL DAILY BRIEF β INFRASTRUCTURE SECURITY
Published Friday, July 17, 2026 at 02:28 PM PT 17 JUL 2026 BLUF: Critical SharePoint RCE (CVE-2026-58644) actively exploited in wild; Windows LegacyHive zero-day privilege escalation disclosed; FortiSandbox command injection added to KEV catalog with active attack evidence. Immediate patching required across production environments. CYBER β’ CVE-2026-58644 (Microsoft SharePoint RCE) β ACTIVE EXPLOITATION: Microsoft published advisory 14 JUL on critical RCE affecting on-premises SharePoint Server (CVSS 9.8). Threat actors exploiting in wild within 72 hours of disclosure. [Rapid7, Microsoft Security] [HIGH CONFIDENCE]. Affects all on-premises deployments; cloud instances unaffected. Patch availability confirmed; deployment timeline critical for SRE teams managing legacy SharePoint infrastructure. ...








