CISA orders patch for critical WSUS RCE exploited now
🔔 CISA ordered U.S. federal agencies to urgently patch a critical, actively exploited Windows Server Update Services vulnerability (CVE-2025-59287) that enables unauthenticated remote code execution with SYSTEM privileges. Microsoft released out-of-band security updates after proof-of-concept exploit code appeared, and administrators are urged to install them immediately or disable the WSUS Server role as an interim mitigation. Security firms reported scanning and attacks against WSUS instances exposed on default ports 8530/8531, and CISA has added the flaw to its Known Exploited Vulnerabilities catalog, mandating federal patching under BOD 22-01.
