CVE-2026-45654
Secure Boot Security Feature Bypass Vulnerability
Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Secure Boot Security Feature Bypass Vulnerability
Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
- Record
CVE-2026-45654- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C - Weakness
- CWE-284
- Updated
- 2026-11-11
EUVDEUVD-2026-35570
Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
- Record
EUVD-2026-35570- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C - Updated
- 2026-11-11
GitHub AdvisoriesGHSA-26mx-r4q8-6qp7
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a...
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
- Record
GHSA-26mx-r4q8-6qp7- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
NVD
Improper access control in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
- Record
CVE-2026-45654- CVSS 3.1
- 7.9 High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N - Weakness
- CWE-284
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | EUVD | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-45654 is a high vulnerability (CVSS 7.9) in Microsoft Windows 11 Version 24h2, published June 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. No source names a fixed version.