Syntax: kev:true severity:critical epss:>0.95 vendor:cisco patch:false
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Reliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.
Reliance on a component that is not updateable in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Secure Boot allows an authorized attacker to bypass a security feature locally.
Protection mechanism failure in Windows Boot Manager allows an authorized attacker to bypass a security feature locally.
CVE-2026-21509
HIGH CVSS 7.8 KEV
Find Similar
Reliance on untrusted inputs in a security decision in Microsoft Office allows an unauthorized attacker to bypass a security feature locally.
Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
Use of uninitialized resource in Windows Boot Manager allows an unauthorized attacker to bypass a security feature with a physical attack.
Improper validation of specified type of input in Microsoft Windows allows an authorized attacker to elevate privileges locally.
Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
Improper validation of specified type of input in Windows Authentication Methods allows an authorized attacker to elevate privileges locally.
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