CVE-2026-11835 Caliptra Update-Reset Secure-Boot Bypass via Attacker-Chosen AXI Staging Address (TOCTOU)

Time-of-check time-of-use TOCTOU vulnerability combined with missing input validation in Caliptra Core ROM UpdateResetFlow::run in subsystem mode allows a compromised local attacker to silently bypass secure boot by supplying an AXI staging address that is not validated against the strap-configur...

CVE-2026-11835

Time-of-check time-of-use TOCTOU vulnerability combined with missing input validation in Caliptra Core ROM UpdateResetFlow::run in subsystem mode allows a compromised local attacker to silently bypass secure boot by supplying an AXI staging address that is not validated against the strap-configur...

EUVD-2026-52549

Time-of-check time-of-use TOCTOU vulnerability combined with missing input validation in Caliptra Core ROM UpdateResetFlow::run in subsystem mode allows a compromised local attacker to silently bypass secure boot by supplying an AXI staging address that is not validated against the strap-configur...

CVE-2026-11835

Caliptra Core ROM (2.1.0–2.1.1) contains a TOCTOU vulnerability in UpdateResetFlow::run() that, with missing input validation, lets a compromised MCU firmware with AXI manager access inject an unvalidated AXI staging address. This bypasses secure boot by not validating against SS_EXTERNAL_STAGING...

PT-2026-67570

Time-of-check time-of-use TOCTOU vulnerability combined with missing input validation in Caliptra Core ROM UpdateResetFlow::run in subsystem mode allows a compromised local attacker to silently bypass secure boot by supplying an AXI staging address that is not validated against the strap-configur...

CVE-2026-20466

CVE-2026-20466 : A heap buffer overflow in the secure boot flow may allow local privilege escalation with physical access and no user interaction. Affected platforms include MT2737 (AUTO00845351) and MT6880/MT6890/MT6990 (ALPS11072643); Issue MSV-6929. Patch guidance is provided in the MT securit...

EUVD-2026-52056

In sec boot, there is a possible escalation of privilege due to a heap buffer overflow. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID:...

CVE-2026-20466

In sec boot, there is a possible escalation of privilege due to a heap buffer overflow. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID:...

[SECURITY] [DLA 4685-1] grub2 security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4685-1 [email protected] https://www.debian.org/lts/security/ Emilio Pozuelo Monfort July 15, 2026 https://wiki.debian.org/LTS -...

CVE-2026-49783

Improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally...

CVE-2026-49783 Secure Boot Security Feature Bypass Vulnerability

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CVE-2026-49783

CVE-2026-49783 is a Windows Secure Boot issue described as an improperly implemented security check for the standard, enabling a local attacker with low privileges to bypass a security feature. The CVSS v3.1 base score is 7.8 (HIGH) with local attack vector, low attack complexity, no user interac...

CVE-2026-49783 Secure Boot Security Feature Bypass Vulnerability

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Secure Boot Security Feature Bypass Vulnerability

Improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally...

June 9, 2026—KB5094042 (Monthly Rollup)

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June 9, 2026—KB5094041 (Monthly Rollup)

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PT-2026-58157

Name of the Vulnerable Software and Affected Versions Windows affected versions not specified Description An improperly implemented security check for standard in Windows Secure Boot allows an authorized attacker to bypass a security feature locally. This issue is particularly critical for server...

RLSA-2026:36721 Moderate: edk2 security, bug fix, and enhancement update

EDK Embedded Development Kit is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. Security Fixes: openssl: Out-of-bounds read & write in RFC 3211 KEK Unwrap CVE-2025-9230 Bug Fixes and Enhancements: FJ8.10 Bug How to Updat...

edk2 security, bug fix, and enhancement update

An update is available for edk2. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list EDK Embedded Development Kit is a project to enable UEFI support for Virtual...

Moderate: Red Hat Security Advisory: edk2 security, bug fix, and enhancement update

An update for edk2 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the C...