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    CVE-2021-26353

    Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.

    Published:May 10, 2022
    Last Modified:Feb 24, 2026
    EPS:May 10, 2022
    EPSS Score:0.00136
    CVSS Score:7.8

    Affected Products

    Vendor
    Amd
    Product
    Epyc 72f3
    Vendor
    Amd
    Product
    Epyc 72f3 Firmware
    Vendor
    Amd
    Product
    Epyc 7313
    Vendor
    Amd
    Product
    Epyc 7313 Firmware
    Vendor
    Amd
    Product
    Epyc 7313p
    Vendor
    Amd
    Product
    Epyc 7313p Firmware
    Vendor
    Amd
    Product
    Epyc 7343
    Vendor
    Amd
    Product
    Epyc 7343 Firmware
    Vendor
    Amd
    Product
    Epyc 7373x
    Vendor
    Amd
    Product
    Epyc 7373x Firmware
    Vendor
    Amd
    Product
    Epyc 73f3
    Vendor
    Amd
    Product
    Epyc 73f3 Firmware
    Vendor
    Amd
    Product
    Epyc 7413
    Vendor
    Amd
    Product
    Epyc 7413 Firmware
    Vendor
    Amd
    Product
    Epyc 7443
    Vendor
    Amd
    Product
    Epyc 7443 Firmware
    Vendor
    Amd
    Product
    Epyc 7443p
    Vendor
    Amd
    Product
    Epyc 7443p Firmware
    Vendor
    Amd
    Product
    Epyc 7453
    Vendor
    Amd
    Product
    Epyc 7453 Firmware
    Vendor
    Amd
    Product
    Epyc 7473x
    Vendor
    Amd
    Product
    Epyc 7473x Firmware
    Vendor
    Amd
    Product
    Epyc 74f3
    Vendor
    Amd
    Product
    Epyc 74f3 Firmware
    Vendor
    Amd
    Product
    Epyc 7513
    Vendor
    Amd
    Product
    Epyc 7513 Firmware
    Vendor
    Amd
    Product
    Epyc 7543
    Vendor
    Amd
    Product
    Epyc 7543 Firmware
    Vendor
    Amd
    Product
    Epyc 7543p
    Vendor
    Amd
    Product
    Epyc 7543p Firmware
    Vendor
    Amd
    Product
    Epyc 7573x
    Vendor
    Amd
    Product
    Epyc 7573x Firmware
    Vendor
    Amd
    Product
    Epyc 75f3
    Vendor
    Amd
    Product
    Epyc 75f3 Firmware
    Vendor
    Amd
    Product
    Epyc 7643
    Vendor
    Amd
    Product
    Epyc 7643 Firmware
    Vendor
    Amd
    Product
    Epyc 7663
    Vendor
    Amd
    Product
    Epyc 7663 Firmware
    Vendor
    Amd
    Product
    Epyc 7713
    Vendor
    Amd
    Product
    Epyc 7713 Firmware
    Vendor
    Amd
    Product
    Epyc 7713p
    Vendor
    Amd
    Product
    Epyc 7713p Firmware
    Vendor
    Amd
    Product
    Epyc 7763
    Vendor
    Amd
    Product
    Epyc 7763 Firmware
    Vendor
    Amd
    Product
    Epyc 7773x
    Vendor
    Amd
    Product
    Epyc 7773x Firmware

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-665 Improper Initialization

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    CVE-2023-20573 (CVSS 3.2) — A privileged attacker can prevent delivery of debug exceptions to SEV-SNP guests potentially resulting in gues…
    CVE-2023-31347 (CVSS 4.9) — Due to a code bug in Secure_TSC, SEV firmware may allow an attacker with high privileges to cause a guest to o…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High