CVE-2026-7328 Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Missing authorization in Caliptra Core Runtime Firmware INVOKEDPEMLDSA87, CMAESGCMDECRYPTDMA, EXTERNALMAILBOXCMD commands in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond...

EUVD-2026-47746

Missing authorization in Caliptra Core Runtime Firmware INVOKEDPEMLDSA87, CMAESGCMDECRYPTDMA, EXTERNALMAILBOXCMD commands in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond...

CVE-2026-7328 Unverified AXI Address in Subsystem Mode Commands Enables Denial of Service

Missing authorization in Caliptra Core Runtime Firmware INVOKEDPEMLDSA87, CMAESGCMDECRYPTDMA, EXTERNALMAILBOXCMD commands in subsystem mode allows a privileged local attacker to cause a denial of service via mailbox commands containing unverified AXI addresses. The security impact beyond...

CVE-2026-6458

Missing cryptographic step in Caliptra Core Firmware aes256gcmupdate module results in an incorrect GCM authentication tag. When the streaming AES-256-GCM API is used with empty AAD, the hardware GHASH accumulator state is not saved after the first update call, causing the final tag to exclude th...

CVE-2026-5818

The CVE-2026-5818 entry concerns the Caliptra Core Runtime Firmware and describes an incorrect return-value check in ActivateFirmwareCmd::activate_fw modules, which allows bypassing the Core’s verification of MCU firmware during a hitless update. Affected versions are Core Runtime Firmware 2.0.0 ...

CVE-2026-5818 MCU Firmware Update Authentication Bypass on Caliptra Core

Incorrect check of function return value in Caliptra Core Runtime Firmware ActivateFirmwareCmd::activatefw modules allows bypass of Caliptra Core's verification of the MCU FW during a hitless update. This issue affects Core Runtime Firmware: from 2.0.0 through 2.0.1, 2.1.0...

CVE-2026-6458 AES-256-GCM Authentication Tag Does Not Cover First Ciphertext Blocks When AAD Is Empty

Missing cryptographic step in Caliptra Core Firmware aes256gcmupdate module results in an incorrect GCM authentication tag. When the streaming AES-256-GCM API is used with empty AAD, the hardware GHASH accumulator state is not saved after the first update call, causing the final tag to exclude th...

CVE-2026-6458

Missing cryptographic step in Caliptra Core Firmware aes256gcmupdate module results in an incorrect GCM authentication tag. When the streaming AES-256-GCM API is used with empty AAD, the hardware GHASH accumulator state is not saved after the first update call, causing the final tag to exclude th...

PT-2026-51609

Name of the Vulnerable Software and Affected Versions Caliptra Core Runtime Firmware versions 2.0.0 through 2.0.1 Caliptra Core Runtime Firmware version 2.1.0 Description An incorrect check of a function return value within the ActivateFirmwareCmd::activate fw modules allows the bypass of the...

CVE-2023-53487

In the Linux kernel, the following vulnerability has been resolved: powerpc/rtasflash: allow user copy to flash block cache objects With hardened usercopy enabled CONFIGHARDENEDUSERCOPY=y, using the /proc/powerpc/rtas/firmwareupdate interface to prepare a system firmware update yields a BUG: kern...

SUSE CVE-2022-49955

In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: Fix RTAS MSRHV handling for Cell The semi-recent changes to MSR handling when entering RTAS firmware cause crashes on IBM Cell machines. An example trace: kernel tried to execute user page 2fff01a8 - exploit attempt...

UBUNTU-CVE-2022-49955

In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: Fix RTAS MSRHV handling for Cell The semi-recent changes to MSR handling when entering RTAS firmware cause crashes on IBM Cell machines. An example trace: kernel tried to execute user page 2fff01a8 - exploit attempt...

HP Workstation BIOS Security Feature Issue Vulnerability

HP Workstation is a high-performance desktop computer from Hewlett-Packard HP in the U.S. BIOS is one of the basic input and output systems. A security vulnerability exists in the HP Workstation BIOS UEFI Firmware. An attacker could exploit this vulnerability to tamper with the runtime BIOS code...