Vulnerability-Lookup

CVE-2021-46795 (GCVE-0-2021-46795)

Vulnerability from cvelistv5 – Published: 2023-01-10 20:53 – Updated: 2025-04-09 15:13

Summary

A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.

Severity

4.7 (Medium)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-04-09 15:13 UTC

CWE

n/a
CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

AMD mitre root

References

1 reference

URL	Tags
https://www.amd.com/en/corporate/product-security…

Impacted products

2 products

Vendor	Product	Version	CPE status
AMD	Ryzen 5000 Series	Affected: various	guessed
AMD	Ryzen 3000 Series	Affected: various	guessed

Date Public

2023-01-10 17:30

Show details on NVD website

JSON

To clipboard

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              "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"
            }
          ],
          "source": {
            "advisory": "AMD-SB-1031",
            "discovery": "UNKNOWN"
          },
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
        "assignerShortName": "AMD",
        "cveId": "CVE-2021-46795",
        "datePublished": "2023-01-10T20:53:25.868Z",
        "dateReserved": "2022-05-04T18:14:06.438Z",
        "dateUpdated": "2025-04-09T15:13:26.855Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2021-46795

Vulnerability from fkie_nvd - Published: 2023-01-11 08:15 - Updated: 2026-06-17 04:15

Severity

4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	psirt@amd.com	https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031	Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031	Vendor Advisory

Impacted products

Vendor	Product	Version
amd	comboam4v2_pi_firmware	*
amd	comboam4v2_pi	-
amd	renoirpi-fp6_firmware	*
amd	comboam4v2_pi	-
amd	cezannepi-fp6_firmware	*
amd	cezannepi-fp6	-

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "affected",
          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
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            }
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        },
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          "packageName": "AGESA",
          "platforms": [
            "x86"
          ],
          "product": "Ryzen 3000 Series ",
          "vendor": " AMD",
          "versions": [
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              "status": "affected",
              "version": "various "
            }
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    }
  ],
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  "lastModified": "2026-06-17T04:15:35.720",
  "metrics": {
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          "attackComplexity": "HIGH",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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              "automatable": "no"
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          "role": "CISA Coordinator",
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          "version": "2.0.3"
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    },
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  "sourceIdentifier": "psirt@amd.com",
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      "type": "Secondary"
    }
  ]
}

GHSA-WFJ9-288H-5MPM

Vulnerability from github – Published: 2023-01-11 09:30 – Updated: 2023-01-20 21:30

Details

Severity

4.7 (Medium)


                  
                    CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-46795"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-367"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2023-01-11T08:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.",
  "id": "GHSA-wfj9-288h-5mpm",
  "modified": "2023-01-20T21:30:33Z",
  "published": "2023-01-11T09:30:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46795"
    },
    {
      "type": "WEB",
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1031"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-46795

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Aliases

CVE-2021-46795

Aliases

CVE-2021-46795

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-46795",
    "id": "GSD-2021-46795"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-46795"
      ],
      "details": "A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.",
      "id": "GSD-2021-46795",
      "modified": "2023-12-13T01:23:32.700619Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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        "ID": "CVE-2021-46795",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
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                  {
                    "product_name": "Ryzen 5000 Series",
                    "version": {
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                        {
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                        }
                      ]
                    }
                  },
                  {
                    "product_name": "Ryzen 3000 Series ",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
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                      ]
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              },
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            }
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    "nvd.nist.gov": {
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}

WID-SEC-W-2023-0061

Vulnerability from csaf_certbund - Published: 2023-01-10 23:00 - Updated: 2023-05-10 22:00

Summary

AMD Prozessoren: Mehrere Schwachstellen

Severity

Mittel

Scope

31 vulnerabilities in this advisory, including CVE-2021-46795.

CVE-2021-46795

Es existieren mehrere Schwachstellen in AMD Prozessoren. Ein lokaler Angreifer kann diese Schwachstellen ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand zu verursachen und Daten zu manipulieren.

Known affected: 6 products

Open the full advisory

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2021-46795 (GCVE-0-2021-46795)

FKIE_CVE-2021-46795

GHSA-WFJ9-288H-5MPM

GSD-2021-46795

WID-SEC-W-2023-0061

Tags

Sightings

Nomenclature

Related by attack behaviour