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CVE-2026-21265

🗓️ 14 Jan 2026 18:22:52Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 16 Views

Windows Secure Boot updates may fail due to firmware defects, risking trust loss from expired KEK and DB certificates.

Related
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-21265
13 Jan 202617:56
–attackerkb
bdu_fstec
BDU FSTEC
Secure Boot Bypass
16 Jan 202600:00
–bdu_fstec
circl
Circl
CVE-2026-21265
13 Jan 202618:01
–circl
cnnvd
CNNVD
Microsoft Windows Secure Boot 安全漏洞
13 Jan 202600:00
–cnnvd
cve
CVE
CVE-2026-21265
13 Jan 202617:56
–cve
cvelist
Cvelist
CVE-2026-21265 Secure Boot Certificate Expiration Security Feature Bypass Vulnerability
13 Jan 202617:56
–cvelist
euvd
EUVD
EUVD-2026-2100
13 Jan 202617:56
–euvd
jvn
Japan Vulnerability Notes
Security information for Hitachi Disk Array Systems
20 Feb 202609:35
–jvn
mskb
Microsoft KB
January 13, 2026—KB5073450 (OS Build 25398.2092)
13 Jan 202616:00
–mskb
mskb
Microsoft KB
January 13, 2026—KB5073455 (OS Build 22631.6491)
13 Jan 202616:00
–mskb
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