CVE Feed

    Dashboard / CVE / CVE-2021-41837

    CVE-2021-41837

    An issue was discovered in AhciBusDxe in the kernel 5.0 through 5.5 in Insyde InsydeH2O. Because of an Untrusted Pointer Dereference that causes SMM memory corruption, an attacker may be able to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.

    Published:Feb 3, 2022
    Last Modified:Aug 11, 2026
    EPS:Feb 3, 2022
    EPSS Score:0.00279
    CVSS Score:8.2

    Affected Products

    Vendor
    Insyde
    Product
    Insydeh2o
    Vendor
    Siemens
    Product
    Simatic Field Pg M5
    Vendor
    Siemens
    Product
    Simatic Field Pg M5 Firmware
    Vendor
    Siemens
    Product
    Simatic Field Pg M6
    Vendor
    Siemens
    Product
    Simatic Field Pg M6 Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc127e
    Vendor
    Siemens
    Product
    Simatic Ipc127e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc227g
    Vendor
    Siemens
    Product
    Simatic Ipc227g Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc277g
    Vendor
    Siemens
    Product
    Simatic Ipc277g Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc327g
    Vendor
    Siemens
    Product
    Simatic Ipc327g Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc377g
    Vendor
    Siemens
    Product
    Simatic Ipc377g Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc427e
    Vendor
    Siemens
    Product
    Simatic Ipc427e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc477e
    Vendor
    Siemens
    Product
    Simatic Ipc477e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc627e
    Vendor
    Siemens
    Product
    Simatic Ipc627e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc647e
    Vendor
    Siemens
    Product
    Simatic Ipc647e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc677e
    Vendor
    Siemens
    Product
    Simatic Ipc677e Firmware
    Vendor
    Siemens
    Product
    Simatic Ipc847e
    Vendor
    Siemens
    Product
    Simatic Ipc847e Firmware
    Vendor
    Siemens
    Product
    Simatic Itp1000
    Vendor
    Siemens
    Product
    Simatic Itp1000 Firmware

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-9805 (CVSS 2.7) — SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking b…
    CVE-2026-8810 (CVSS 6.9) — On ARM platforms, a vulnerability in the architecture design of HDD Password could allow an attacker to retrie…
    CVE-2026-6484 (CVSS 8.2) — In an UEFI, Lack of verified boot to certain FV may cause arbitrary code execution.…
    CVE-2025-12053 (CVSS 7.8) — The drivers in the tool packages use RTL_QUERY_REGISTRY_DIRECT flag to read a registry value to which an untru…
    CVE-2025-12052 (CVSS 7.8) — The drivers in the tool packages use RTL_QUERY_REGISTRY_DIRECT flag to read a registry value to which an untru…
    CVE-2025-12051 (CVSS 7.8) — The drivers in the tool packages use RTL_QUERY_REGISTRY_DIRECT flag to read a registry value to which an untru…
    CVE-2025-12050 (CVSS 7.8) — The drivers in the tool packages use RTL_QUERY_REGISTRY_DIRECT flag to read a registry value to which an untru…
    CVE-2025-10451 (CVSS 8.2) — Unchecked output buffer may allowed arbitrary code execution in SMM and potentially result in SMM memory corru…
    CVE-2025-4410 (CVSS 7.5) — A buffer overflow vulnerability exists in the module SetupUtility. An attacker with local privileged access ca…
    CVE-2025-4277 (CVSS 7.5) — Tcg2Smm has a vulnerability which can be used to write arbitrary memory inside SMRAM and execute arbitrary cod…

    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