Improper Prevention of Lock Bit Modification

The product uses a trusted lock bit for restricting access to registers, address regions, or other resources, but the product does not prevent the value of the lock bit from being modified after it has been set.

CVEs (3)

CVE VENDORS PRODUCTS UPDATED PUBLISHED CVSS
CVE-2025-52536 - - Jun 17, 2026 Feb 10, 2026 6.7 MEDIUM· v4 N/A· v3 N/A· v2 Improper Prevention of Lock Bit Modification in SEV firmware could allow a privileged attacker to downgrade firmware potentially resulting in a loss of integrity.
CVE-2024-36354 - - Jun 17, 2026 Sep 6, 2025 N/A· v4 7.5 HIGH· v3 N/A· v2 Improper input validation for DIMM serial presence detect (SPD) metadata could allow an attacker with physical access, ring0 access on a system with a non-compliant DIMM, or control over the Root of Trust for BIOS update...Show more Improper input validation for DIMM serial presence detect (SPD) metadata could allow an attacker with physical access, ring0 access on a system with a non-compliant DIMM, or control over the Root of Trust for BIOS update, to bypass SMM isolation potentially resulting in arbitrary code execution at the SMM level.Show less
CVE-2022-42285 1Nvidia 1Sbios Jun 17, 2026 Jan 13, 2023 N/A· v4 7.8 HIGH· v3 N/A· v2 DGX A100 SBIOS contains a vulnerability in the Pre-EFI Initialization (PEI)phase, where a privileged user can disable SPI flash protection, which may lead to denial of service, escalation of privileges, or data tampering...Show more DGX A100 SBIOS contains a vulnerability in the Pre-EFI Initialization (PEI)phase, where a privileged user can disable SPI flash protection, which may lead to denial of service, escalation of privileges, or data tampering.Show less