CVE-2026-78446

Use after free in Windows Distributed File System (DFS) allows an authorized attacker to deny service over a network.

• Published Sep 8, 2026
• CVSS 5.3 medium
• 0.8% chance of exploitation in the next 30 days (EPSS)
• A fix is available

CVE-2026-78446 at the National Vulnerability Database