CVE-2026-48578: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-48578 and classified under CWE-284 (Improper Access Control), affects Windows 10 Version 1607 (build 10.0.14393.0). It involves a failure in the Windows Secure Boot protection mechanism that enables a local attacker with authorized access and high privileges to bypass security features. The CVSS 3.1 base score is 7.9, reflecting high impact on confidentiality and integrity with no user interaction required. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can bypass Windows Secure Boot protections, potentially leading to unauthorized access or modification of protected system components. The vulnerability affects system confidentiality and integrity but does not impact availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48578 to remediate this vulnerability.
CVE-2026-48578: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Description
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
CVSS v3.1
Score 7.9high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-48578 and classified under CWE-284 (Improper Access Control), affects Windows 10 Version 1607 (build 10.0.14393.0). It involves a failure in the Windows Secure Boot protection mechanism that enables a local attacker with authorized access and high privileges to bypass security features. The CVSS 3.1 base score is 7.9, reflecting high impact on confidentiality and integrity with no user interaction required. Microsoft has released an official fix for this vulnerability as documented in their security update guide.
Potential Impact
An authorized local attacker can bypass Windows Secure Boot protections, potentially leading to unauthorized access or modification of protected system components. The vulnerability affects system confidentiality and integrity but does not impact availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48578 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-21T20:00:35.246Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-48578","vendor":"Microsoft"}]
Threat ID: 6a284d178dd33fbd85665a09
Added to database: 6/9/2026, 5:27:51 PM
Last enriched: 6/9/2026, 5:41:02 PM
Last updated: 6/10/2026, 4:58:16 AM
Views: 7
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