cve-2026-45487

CVE-2026-45487 is a Microsoft-disclosed elevation-of-privilege vulnerability in the Windows Program Compatibility Assistant Service, announced on June 9, 2026. This local Windows flaw allows an attacker who already has a foothold on a system to escalate privileges. The advisory confirms the bug's existence but withholds detailed root-cause information, a pattern that both defenders and attackers must navigate. On WindowsForum.com, discussions emphasize patch priority for this type of vulnerability, as it is not wormable but becomes critical after initial compromise. Users share insights on mitigation, patch management, and the implications of Microsoft's cautious disclosure language.