CVE-2026-21265 Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

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CVE-2026-21265 Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

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January 13, 2026—KB5073697 (Monthly Rollup)

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January 13, 2026—KB5073696 (Monthly Rollup)

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January 13, 2026—KB5073699 (Security-only update)

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January 13, 2026—KB5073695 (Monthly Rollup)

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January 13, 2026—KB5073698 (Monthly Rollup)

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January 13, 2026—KB5073455 (OS Build 22631.6491)

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Secure Boot Certificate Expiration Security Feature Bypass Vulnerability

Windows Secure Boot stores Microsoft certificates in the UEFI KEK and DB. These original certificates are approaching expiration, and devices containing affected certificate versions must update them to maintain Secure Boot functionality and avoid compromising security by losing security fixes...

January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)

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January 13, 2026—KB5073457 (OS Build 20348.4648)

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January 13, 2026—KB5073450 (OS Build 25398.2092)

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January 13, 2026—KB5073722 (OS Build 14393.8783)

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January 13, 2026—KB5073700 (Security-only update)

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January 13, 2026—KB5073723 (OS Build 17763.8276)

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PT-2026-2766

Name of the Vulnerable Software and Affected Versions Windows versions affected versions not specified Windows Server versions affected versions not specified Description The issue centers around the approaching expiration of Microsoft certificates used in Windows Secure Boot, specifically those...

MiracleLinux 7 : grub2-2.02-0.87.14.0.4.el7.AXS7 (AXSA:2025-9938:04)

The remote MiracleLinux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the AXSA:2025-9938:04 advisory. CVE-2025-0624: net: Out-of-bounds write in grubnetsearchconfigfile CVE-2025-0690: read: Integer overflow may lead to out-of-bounds write...

Microsoft Windows Secure Boot 安全漏洞

Microsoft Windows Secure Boot is a secure boot from Microsoft Corporation USA. A security vulnerability exists in Microsoft Windows Secure Boot. An attacker exploiting this vulnerability could bypass certain features. The following products and editions are affected:Windows 10 Version 1809 for...

PT-2026-2658

Name of the Vulnerable Software and Affected Versions Microsoft Windows versions prior to February 2026 Patch Tuesday updates Description A vulnerability exists in the Desktop Window Manager component of Microsoft Windows that can lead to the disclosure of sensitive information to an unauthorized...

CVE-2023-50810

In certain Sonos products before Sonos S1 Release 11.12 and S2 release 15.9, a vulnerability exists in the U-Boot component of the firmware that allow persistent arbitrary code execution with Linux kernel privileges. A failure to correctly handle the return value of the setenv command can be used...