Vulnerability-Lookup

CVE-2021-43613 (GCVE-0-2021-43613)

Vulnerability from cvelistv5 – Published: 2026-09-03 02:05 – Updated: 2026-09-03 13:03

Title

SysPasswordDxe: Password hashes are exposed in runtime UEFI variables, leading to escalation of privilege

Summary

An issue was discovered in SysPasswordDxe in Insyde InsydeH2O. User and administrator password hashes are exposed in runtime UEFI variables, leading to escalation of privilege

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 13:02 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

Insyde mitre root

References

1 reference

URL	Tags
https://www.insyde.com/security-pledge/sa-2022027/

Impacted products

1 product

Vendor	Product	Version	CPE status
Insyde Software	InsydeH2O	Affected: See in the Solution	guessed

Date Public

2026-09-03 01:55

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2021-43613

Vulnerability from fkie_nvd - Published: 2026-09-03 13:04 - Updated: 2026-09-03 18:09

Severity

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

Summary

An issue was discovered in SysPasswordDxe in Insyde InsydeH2O. User and administrator password hashes are exposed in runtime UEFI variables, leading to escalation of privilege

References

	URL	Tags
	8338d8cb-57f7-4252-abc0-96fd13e98d21	https://www.insyde.com/security-pledge/sa-2022027/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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      "affectedData": [
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          "defaultStatus": "unaffected",
          "platforms": [
            "x86"
          ],
          "product": "InsydeH2O",
          "vendor": "Insyde Software",
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        }
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}

GHSA-3XMC-3P6H-5PX7

Vulnerability from github – Published: 2026-09-03 15:32 – Updated: 2026-09-03 15:32

Details

An issue was discovered in SysPasswordDxe in Insyde InsydeH2O. User and administrator password hashes are exposed in runtime UEFI variables, leading to escalation of privilege

Severity

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

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  ],
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-03T13:04:12Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in SysPasswordDxe in Insyde InsydeH2O. User and administrator password hashes are exposed in runtime UEFI variables, leading to escalation of privilege",
  "id": "GHSA-3xmc-3p6h-5px7",
  "modified": "2026-09-03T15:32:08Z",
  "published": "2026-09-03T15:32:08Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-43613"
    },
    {
      "type": "WEB",
      "url": "https://www.insyde.com/security-pledge/sa-2022027"
    }
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      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-43613

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

Details

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Aliases

CVE-2021-43613

Aliases

CVE-2021-43613

JSON

To clipboard

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  "GSD": {
    "alias": "CVE-2021-43613",
    "id": "GSD-2021-43613"
  },
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      "remediation": "unknown",
      "reportConfidence": "confirmed",
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        "CVE-2021-43613"
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}

SSA-306654

Vulnerability from csaf_siemens - Published: 2022-02-22 00:00 - Updated: 2026-08-11 00:00

Summary

SSA-306654: Insyde BIOS Vulnerabilities in Siemens Industrial Products

Scope

26 vulnerabilities in this advisory, including CVE-2021-43613.

CVE-2021-43613

An issue was discovered in Insyde InsydeH2O 5.x, affecting SysPasswordDxe that exposes user and administrator password hashes in runtime UEFI variables, leading to escalation of privilege.

5.2 (Medium)


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

Known affected: 18 products

https://support.industry.siemens.com/cs/ww/en/view/109814796/ https://support.industry.siemens.com/cs/ww/en/view/109763408/

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.

Action not permitted

CVE-2021-43613 (GCVE-0-2021-43613)

FKIE_CVE-2021-43613

GHSA-3XMC-3P6H-5PX7

GSD-2021-43613

SSA-306654

Tags

Sightings

Nomenclature