cve 2026 50455

The cve 2026 50455 tag covers Microsoft’s July 2026 security update for an Important-rated information disclosure vulnerability in the Windows Universal Plug and Play library, upnp.dll. The issue affects Windows 10, Windows 11, and multiple Windows Server generations. Exploitation requires local access and low-level privileges, but a successful attack could expose sensitive information with a high confidentiality impact. Coverage focuses on Microsoft’s Security Update Guide, the National Vulnerability Database record, affected platforms, and administrator guidance. Organizations should deploy the July cumulative security updates and verify that endpoints and servers have reached corrected builds to address CVE-2026-50455.