CVE-2021-45970 (GCVE-0-2021-45970)

Vulnerability from cvelistv5 – Published: 2022-01-05 22:59 – Updated: 2026-08-11 12:22
VLAI
Summary
An issue was discovered in IdeBusDxe in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (the status code saved at the CommBuffer+4 location).
CWE
  • n/a
Impacted products
Vendor Product Version CPE status
Siemens RUGGEDCOM APE1808 - BIOS Affected: 0 , < V1.0.202N (custom)
guessed Create a notification for this product.
Siemens SIMATIC Field PG M5 Affected: 0 , < V22.01.10 (custom)
guessed Create a notification for this product.
Siemens SIMATIC Field PG M6 Affected: 0 , < V26.01.13 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC127E Affected: 0 , < V27.01.09 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC227G Affected: 0 , < V28.01.04 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC277G Affected: 0 , < V28.01.04 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC277G PRO Affected: 0 , < V28.01.04 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC327G Affected: 0 , < V28.01.04 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC377G Affected: 0 , < V28.01.04 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC427E Affected: 0 , < V21.01.17 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC477E Affected: 0 , < V21.01.17 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC477E PRO Affected: 0 , < V21.01.17 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC627E Affected: 0 , < V25.02.12 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC647E Affected: 0 , < V25.02.12 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC677E Affected: 0 , < V25.02.12 (custom)
guessed Create a notification for this product.
Siemens SIMATIC IPC847E Affected: 0 , < V25.02.12 (custom)
guessed Create a notification for this product.
Siemens SIMATIC ITP1000 Affected: 0 , < V23.01.10 (custom)
guessed Create a notification for this product.
Siemens SIPLUS IPC427E Affected: 0 , < V21.01.17 (custom)
guessed Create a notification for this product.
Show details on NVD website

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    "redhat_vex": {
      "current_release_date": "2025-05-29T04:19:29+00:00",
      "cve": "CVE-2021-45970",
      "id": "CVE-2021-45970",
      "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-2021-45970",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-45970.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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