CVE-2026-9805

FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow

Published Aug 26, 2026 CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed
Description
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.

Remediation

Vendor Solution

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

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Insyde
Insyde insydeh2o
Vendors & Products Insyde
Insyde insydeh2o
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
Title FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 2.7, 'vector': 'CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Insyde
Published
Updated
Aug 26, 2026, 3:29 PM
Reserved
May 28, 2026, 6:24 AM
Status
Awaiting Analysis
Published
Aug 26, 2026, 5:18 AM
Modified
Aug 31, 2026, 7:27 PM