PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-48570 Microsoft CVE debrief

CVE-2026-48570 is a protection mechanism failure in Windows Secure Boot, enabling an authorized attacker to bypass a security feature locally. The vulnerability has a CVSS score of 7.9 and is classified as HIGH severity. It was published on 2026-06-09T17:17:45.657Z and modified on 2026-06-10T17:17:05.100Z.

Vendor
Microsoft
Product
Windows 10 Version 1607
CVSS
HIGH 7.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-10
Advisory published
2026-06-09
Advisory updated
2026-06-10

Who should care

Administrators and users of affected Microsoft Windows versions should prioritize patching this vulnerability to prevent potential local attacks.

Technical summary

The vulnerability exists in various versions of Microsoft Windows, including Windows 10, Windows 11, and Windows Server. An authorized attacker can exploit this vulnerability to bypass a security feature locally. The Common Vulnerability Scoring System (CVSS) vector is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N.

Defensive priority

High

Recommended defensive actions

  • Apply patches from Microsoft as soon as possible [ref-4].

Evidence notes

The CVE record [cve-org] and NVD detail [nvd] provide comprehensive information about the vulnerability.

Official resources

CVE-2026-48570 was published on 2026-06-09T17:17:45.657Z and modified on 2026-06-10T17:17:05.100Z.