FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9805
StatePUBLISHED
AssignerInsyde
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-26 05:18:28 UTC
Updated2026-08-31 19:27:23 UTC
DescriptionSMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

Risk And Classification

Primary CVSS: v3.1 2.7 LOW from 8338d8cb-57f7-4252-abc0-96fd13e98d21

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

EPSS: 0.001170000 probability, percentile 0.018340000 (date 2026-09-01)

Problem Types: CWE-787 | CWE-787 CWE-787 Out-of-bounds write

VersionSourceTypeScoreSeverityVector
3.18338d8cb-57f7-4252-abc0-96fd13e98d21Secondary2.7LOWCVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L
3.1CNACVSS2.7LOWCVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L

CVSS v3.1 Breakdown

Attack Vector
Physical
Attack Complexity
High
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Insyde Software InsydeH2O affected See in the Solution x86

References

ReferenceSourceLinkTags
www.insyde.com/security-pledge/sa-2026006 8338d8cb-57f7-4252-abc0-96fd13e98d21 www.insyde.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Intel Mobile platforms: WildCat Lake: Version 05.72.18.0010 Panther Lake: Version 05.72.17.0032 Lunar Lake: Version 05.62.29.0038 Aarow Lake-H/U: Version 05.56.23.0022 Aarow Lake-S/HX: Version 05.56.23.0037 Raptor Lake: Version Tag 05.47.24.0058 Twin Lake: Version Tag 05.44.45.0029 Intel Server/Embedded platforms: Mehlow/Mehlow-R(CFL-S): Trunk Tatlow (RKS): Trunk WhiskeyLake: Trunk CometLake-S: Trunk TigerLake UP3/H: Trunk AlderLake: Trunk Raptor Lake: Trunk Meteor Lake-U/H: Trunk Meteor Lake-PS: Trunk Arrow Lake-S: Trunk Arrow Lake-U/H: Trunk ElkhartLake: Trunk Alder Lake N: Trunk AmstonLake: Trunk TwinLake: Trunk

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