Is it exploited? Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of 29 Oct 2026 .
VulnCheck KEV lists it since 9 May 2023 . It cites 7 public reports, the first from 9 May 2023 .
How likely is exploitation in the next 30 days? 11.8% Up from 10.6% on 23 Oct 2026 .
EPSS score, percentile 96.1 of all scored records. A probability estimated by FIRST, not a report of exploitation.
CISA's SSVC assessment in the CVE record lists exploitation as active .
How severe? 6.7 Medium CVSS v3.1 base score, given by the CNA
Which versions are affected? Affected
from 10.0.26100.0 to before 10.0.26100.4652 from 10.0.26100.0 to before 10.0.26100.4652 from 10.0.26100.0 to before 10.0.26100.4652 from 10.0.17763.0 to before 10.0.17763.7558 from 10.0.0 to before 10.0.17763.6054 from 10.0.17763.0 to before 10.0.17763.7558 and 14 more in the table below
Versions by product
Source: CISA KEV 2026.10.29, as of 29 Oct 2026 ; VulnCheck KEV, as of 30 Oct 2026 ; FIRST EPSS, as of 30 Oct 2026 ; CVE List, as of 30 Oct 2026 . About the data .
Description Secure Boot Security Feature Bypass Vulnerability
Secure Boot Security Feature Bypass Vulnerability
Source: CVE List, as of 30 Oct 2026 . About the data .
What to do Advisories and patches This summary is based on the CVE record as of 30 Oct 2026 . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions Versions by product, as listed in the CVE record (20 products) Microsoft Windows Server 2025 (Server Core installation) Status Versions Affected from 10.0.26100.0 to before 10.0.26100.4652
Microsoft Windows 11 Version 24H2 Status Versions Affected from 10.0.26100.0 to before 10.0.26100.4652
Microsoft Windows Server 2025 Status Versions Affected from 10.0.26100.0 to before 10.0.26100.4652
Microsoft Windows 10 Version 1809 Status Versions Affected from 10.0.17763.0 to before 10.0.17763.7558
Microsoft Windows 10 Version 1809 Status Versions Affected from 10.0.0 to before 10.0.17763.6054
Microsoft Windows Server 2019 Status Versions Affected from 10.0.17763.0 to before 10.0.17763.7558
Microsoft Windows Server 2019 (Server Core installation) Status Versions Affected from 10.0.17763.0 to before 10.0.17763.7558
Microsoft Windows Server 2022 Status Versions Affected from 10.0.20348.0 to before 10.0.20348.3932
Microsoft Windows 10 Version 20H2 Status Versions Affected from 10.0.0 to before 10.0.19042.2965
Microsoft Windows 11 version 21H2 Status Versions Affected from 10.0.22000.0 to before 10.0.22000.3079
Microsoft Windows 10 Version 21H2 Status Versions Affected from 10.0.19044.0 to before 10.0.19044.6093
Microsoft Windows 11 version 22H2 Status Versions Affected from 10.0.22621.0 to before 10.0.22621.5624
Microsoft Windows 10 Version 22H2 Status Versions Affected from 10.0.19045.0 to before 10.0.19045.6093
Microsoft Windows 11 version 22H3 Status Versions Affected from 10.0.22631.0 to before 10.0.22631.5624
Microsoft Windows 11 Version 23H2 Status Versions Affected from 10.0.22631.0 to before 10.0.22631.5624
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Status Versions Affected from 10.0.25398.0 to before 10.0.25398.1732
Microsoft Windows 10 Version 1507 Status Versions Affected from 10.0.10240.0 to before 10.0.10240.21073
Microsoft Windows 10 Version 1607 Status Versions Affected from 10.0.14393.0 to before 10.0.14393.8246
Microsoft Windows Server 2016 Status Versions Affected from 10.0.14393.0 to before 10.0.14393.8246
Microsoft Windows Server 2016 (Server Core installation) Status Versions Affected from 10.0.14393.0 to before 10.0.14393.8246
Source: CVE List, as of 30 Oct 2026 . About the data .
Weakness CWE-863 CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline Date Event 9 May 2023 CVE record published 10 Jul 2025 CVE record last updated
Known exploited Microsoft vulnerabilities CVE-2026-96951 : Microsoft Windows Command Injection Vulnerability (added 13 Oct 2026 ) CVE-2026-65660 : Microsoft SharePoint Code Injection Vulnerability (added 25 Sep 2026 ) CVE-2026-81963 : Microsoft Windows Link Following Vulnerability (added 8 Sep 2026 ) CVE-2026-85880 : Microsoft Windows Heap-Based Buffer Overflow Vulnerability (added 8 Sep 2026 ) CVE-2019-1068 : Microsoft SQL Server Remote Code Execution Vulnerability (added 26 Aug 2026 )