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    Dashboard / CVE / CVE-2021-26342

    CVE-2021-26342

    In SEV guest VMs, the CPU may fail to flush the Translation Lookaside Buffer (TLB) following a particular sequence of operations that includes creation of a new virtual machine control block (VMCB). The failure to flush the TLB may cause the microcode to use stale TLB translations which may allow for disclosure of SEV guest memory contents. Users of SEV-ES/SEV-SNP guest VMs are not impacted by this vulnerability.

    Published:May 11, 2022
    Last Modified:Nov 21, 2024
    EPS:May 11, 2022
    EPSS Score:0.00127
    CVSS Score:3.3

    Affected Products

    Vendor
    Amd
    Product
    Epyc 7001
    Vendor
    Amd
    Product
    Epyc 7001 Firmware
    Vendor
    Amd
    Product
    Epyc 7251
    Vendor
    Amd
    Product
    Epyc 7251 Firmware
    Vendor
    Amd
    Product
    Epyc 7261
    Vendor
    Amd
    Product
    Epyc 7261 Firmware
    Vendor
    Amd
    Product
    Epyc 7281
    Vendor
    Amd
    Product
    Epyc 7281 Firmware
    Vendor
    Amd
    Product
    Epyc 72f3
    Vendor
    Amd
    Product
    Epyc 72f3 Firmware
    Vendor
    Amd
    Product
    Epyc 7301
    Vendor
    Amd
    Product
    Epyc 7301 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 7351
    Vendor
    Amd
    Product
    Epyc 7351 Firmware
    Vendor
    Amd
    Product
    Epyc 7351p
    Vendor
    Amd
    Product
    Epyc 7351p Firmware
    Vendor
    Amd
    Product
    Epyc 7371
    Vendor
    Amd
    Product
    Epyc 7371 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 7401
    Vendor
    Amd
    Product
    Epyc 7401 Firmware
    Vendor
    Amd
    Product
    Epyc 7401p
    Vendor
    Amd
    Product
    Epyc 7401p 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 7451
    Vendor
    Amd
    Product
    Epyc 7451 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 7501
    Vendor
    Amd
    Product
    Epyc 7501 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 7551
    Vendor
    Amd
    Product
    Epyc 7551 Firmware
    Vendor
    Amd
    Product
    Epyc 7551p
    Vendor
    Amd
    Product
    Epyc 7551p 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 7601
    Vendor
    Amd
    Product
    Epyc 7601 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

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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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