CVE-2021-42554 (GCVE-0-2021-42554)

Vulnerability from cvelistv5 – Published: 2022-02-03 01:40 – Updated: 2026-08-11 12:22
VLAI
Summary
An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
CWE
  • n/a
Assigner
Impacted products
Vendor Product Version
Siemens RUGGEDCOM APE1808 - BIOS Affected: 0 , < V1.0.202N (custom)
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Siemens SIMATIC Field PG M5 Affected: 0 , < V22.01.10 (custom)
Create a notification for this product.
Siemens SIMATIC Field PG M6 Affected: 0 , < V26.01.13 (custom)
Create a notification for this product.
Siemens SIMATIC IPC127E Affected: 0 , < V27.01.09 (custom)
Create a notification for this product.
Siemens SIMATIC IPC227G Affected: 0 , < V28.01.04 (custom)
Create a notification for this product.
Siemens SIMATIC IPC277G Affected: 0 , < V28.01.04 (custom)
Create a notification for this product.
Siemens SIMATIC IPC277G PRO Affected: 0 , < V28.01.04 (custom)
Create a notification for this product.
Siemens SIMATIC IPC327G Affected: 0 , < V28.01.04 (custom)
Create a notification for this product.
Siemens SIMATIC IPC377G Affected: 0 , < V28.01.04 (custom)
Create a notification for this product.
Siemens SIMATIC IPC427E Affected: 0 , < V21.01.17 (custom)
Create a notification for this product.
Siemens SIMATIC IPC477E Affected: 0 , < V21.01.17 (custom)
Create a notification for this product.
Siemens SIMATIC IPC477E PRO Affected: 0 , < V21.01.17 (custom)
Create a notification for this product.
Siemens SIMATIC IPC627E Affected: 0 , < V25.02.12 (custom)
Create a notification for this product.
Siemens SIMATIC IPC647E Affected: 0 , < V25.02.12 (custom)
Create a notification for this product.
Siemens SIMATIC IPC677E Affected: 0 , < V25.02.12 (custom)
Create a notification for this product.
Siemens SIMATIC IPC847E Affected: 0 , < V25.02.12 (custom)
Create a notification for this product.
Siemens SIMATIC ITP1000 Affected: 0 , < V23.01.10 (custom)
Create a notification for this product.
Siemens SIPLUS IPC427E Affected: 0 , < V21.01.17 (custom)
Create a notification for this product.
Show details on NVD website

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      "descriptions": "[{\"lang\": \"en\", \"value\": \"An issue was discovered in Insyde InsydeH2O with Kernel 5.0 before 05.08.42, Kernel 5.1 before 05.16.42, Kernel 5.2 before 05.26.42, Kernel 5.3 before 05.35.42, Kernel 5.4 before 05.42.51, and Kernel 5.5 before 05.50.51. An SMM memory corruption vulnerability in FvbServicesRuntimeDxe allows a possible attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.\"}, {\"lang\": \"es\", \"value\": \"Se ha descubierto un problema en InsydeH2O con el Kernel versi\\u00f3n 5.0 antes de 05.08.42, el Kernel 5.1 antes de 05.16.42, el Kernel versi\\u00f3n 5.2 antes de 05.26.42, el Kernel versi\\u00f3n 5.3 antes de 05.35.42, el Kernel versi\\u00f3n 5.4 antes de 05.42.51 y el Kernel versi\\u00f3n 5.5 antes de 05.50.51. Una vulnerabilidad de corrupci\\u00f3n de memoria SMM en FvbServicesRuntimeDxe permite a un posible atacante escribir datos fijos o predecibles en la SMRAM. La explotaci\\u00f3n de este problema podr\\u00eda llevar a escalar privilegios a SMM.\"}]",
      "id": "CVE-2021-42554",
      "lastModified": "2024-11-21T06:27:47.840",
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      "published": "2022-02-03T02:15:07.380",
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    "redhat_vex": {
      "current_release_date": "2025-05-29T05:06:29+00:00",
      "cve": "CVE-2021-42554",
      "id": "CVE-2021-42554",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2021-42554",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-42554.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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