Vulnerability-Lookup

CVE-2026-9805 (GCVE-0-2026-9805)

Vulnerability from cvelistv5 – Published: 2026-08-26 01:00 – Updated: 2026-08-26 15:29

Title

FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow

Summary

SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

Severity

2.7 (Low)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 15:29 UTC

CWE

CWE-787 - Out-of-bounds write

Assigner

Insyde mitre root

References

1 reference

URL	Tags
https://www.insyde.com/security-pledge/sa-2026006/

Impacted products

1 product

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

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-9805

Vulnerability from fkie_nvd - Published: 2026-08-26 05:18 - Updated: 2026-08-31 19:27

Severity

2.7 (Low) - CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L

Summary

SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

References

	URL	Tags
	8338d8cb-57f7-4252-abc0-96fd13e98d21	https://www.insyde.com/security-pledge/sa-2026006/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "modules": [
            "FMTSWriteUseIntelLib"
          ],
          "platforms": [
            "x86"
          ],
          "product": "InsydeH2O",
          "vendor": "Insyde Software",
          "versions": [
            {
              "status": "affected",
              "version": "See in the Solution"
            }
          ]
        }
      ],
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  "lastModified": "2026-08-31T19:27:23.020",
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GHSA-Q9CJ-25HP-849C

Vulnerability from github – Published: 2026-08-26 18:31 – Updated: 2026-08-26 18:31

Details

SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

Severity

2.7 (Low)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-9805"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-26T05:18:28Z",
    "severity": "LOW"
  },
  "details": "SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.",
  "id": "GHSA-q9cj-25hp-849c",
  "modified": "2026-08-26T18:31:52Z",
  "published": "2026-08-26T18:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-9805"
    },
    {
      "type": "WEB",
      "url": "https://www.insyde.com/security-pledge/sa-2026006"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

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-2026-9805 (GCVE-0-2026-9805)

FKIE_CVE-2026-9805

GHSA-Q9CJ-25HP-849C

Tags

Sightings

Nomenclature