cve 2026 58540

The cve 2026 58540 tag covers reporting on a Windows Installer elevation-of-privilege vulnerability addressed in Microsoft’s July 14, 2026 security updates. The flaw involves improper authorization and is rated Important, with a CVSS 3.1 score of 7.8. A locally authenticated attacker with low-level access to an affected computer or server could use it to gain higher permissions; it is not described as an initial internet-based break-in. Coverage includes supported Windows 10 and Windows 11 releases, along with Windows Server versions from Server 2012 through Server 2025. Use this tag to follow the vulnerability’s affected products, risk context, and patching information.