SB2026061133 - Multiple vulnerabilities in Microsoft Secure Boot

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Main Vulnerability Database SB2026061133

SB2026061133 - Multiple vulnerabilities in Microsoft Secure Boot

Published: June 11, 2026

Security Bulletin ID SB2026061133
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 8
Exploitation vector Local access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 8 vulnerabilities.


1) Protection Mechanism Failure (CVE-ID: CVE-2026-45588)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


2) Improper access control (CVE-ID: CVE-2026-45654)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


3) Improper access control (CVE-ID: CVE-2026-48578)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A

local administrator can bypass Secure Boot.


4) Reliance on Component That is Not Updateable (CVE-ID: CVE-2026-48576)

CWE-ID: CWE-1329 - Reliance on Component That is Not Updateable

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


5) Protection Mechanism Failure (CVE-ID: CVE-2026-48575)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


6) Protection Mechanism Failure (CVE-ID: CVE-2026-48570)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


7) Reliance on Component That is Not Updateable (CVE-ID: CVE-2026-48573)

CWE-ID: CWE-1329 - Reliance on Component That is Not Updateable

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to compromise the target system.

The vulnerability exists due reliance on component that is not updateable within Secure Boot. A local administrator can bypass Secure Boot on the system.


8) Protection Mechanism Failure (CVE-ID: CVE-2026-48568)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Secure Boot. A local administrator can bypass Secure Boot.


Remediation

Install update from vendor's website.

References