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CVE-2021-43522 (GCVE-0-2021-43522)

Vulnerability from cvelistv5 – Published: 2022-02-02 23:41 – Updated: 2026-08-11 12:22
VLAI
Summary
An issue was discovered in Insyde InsydeH2O with kernel 5.1 through 2021-11-08, 5.2 through 2021-11-08, and 5.3 through 2021-11-08. A StorageSecurityCommandDxe SMM memory corruption vulnerability allows an attacker to write fixed or predictable data to SMRAM. Exploiting this issue could lead to escalating privileges to SMM.
Severity
7.5 (High)
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
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.
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    "redhat_vex": {
      "current_release_date": "2025-05-29T05:11:17+00:00",
      "cve": "CVE-2021-43522",
      "id": "CVE-2021-43522",
      "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-2021-43522",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-43522.json",
      "version": "3"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.