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CVE-2026-9805

FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow

LOW
2.7
CVSS Score
Published: August 26, 2026 at 01:00 AM UTC
Updated: August 31, 2026 at 07:46 PM UTC
1 product affected across 1 vendorInsydeH2O

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Severity
LOW2.7
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

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

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.insyde.com/security-pledge/sa-2026006/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.7LOWInsyde
Attack Vector
PHYSICAL
Complexity
HIGH
Privileges
HIGH
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-787

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