CVE-2026-9805
FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
Attack profile
How easy it is to exploit
- Attack vector
- Physical
- Complexity
- High
- Privileges needed
- High
- User interaction
- Required
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
- Record
CVE-2026-9805- CVSS 3.1
- 2.7 Low
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2026-66226
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
- Record
EUVD-2026-66226- CVSS 3.1
- 2.7 Low
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-q9cj-25hp-849c
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data...
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
- Record
GHSA-q9cj-25hp-849c- CVSS 3.1
- 2.7 Low
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L - Weakness
- CWE-787
- Updated
- 2026-11-02
NVD
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
- Record
CVE-2026-9805- CVSS 3.1
- 2.7 Low
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:L - Weakness
- CWE-787
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-9805 is a low vulnerability (CVSS 2.7) in Insyde Software Insydeh2o, published August 26, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.13%, the 2nd percentile. No source names a fixed version.