FMTSWriteUseIntelLib: FMTS SMM IHISI Buffer Overflow
Priority LOW 13CWE-787Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
SMM IHISI command handler, FMTSWriteUseIntelLib, for FMTS command 0x32, read and write data without checking buffer size and could cause buffer overflow.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00131 2nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Insyde Software | InsydeH2O | See in the Solution | — | No fix listed | CNA |
- InsydeH2O VendorInsyde Software Affected See in the Solution Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9805
- 2026-10-03 Alias added: GHSA-q9cj-25hp-849c
References
More Insyde Software vulnerabilities
- TI-2023-08797 An issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.8
- TI-2022-16772 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
- TI-2022-16681 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
- TI-2022-16323 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
- TI-2022-15984 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
- TI-2023-08799 An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. CVSS 3.1HIGH 7.8
Sources
- CVE-2026-9805 · CVE Program
- CVE-2026-9805 · NVD
- FIRST EPSS
- GHSA-q9cj-25hp-849c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences