An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm…
Priority LOW 35CWE-787Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.
Summary
An SMM memory corruption vulnerability in the SMM driver (SMRAM write) in CsmInt10HookSmm in Insyde InsydeH2O with kernel 5.0 through 5.5 allows attackers to send arbitrary data to SMM which could lead to privilege escalation.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00206 10th 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
- Total
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* | 5.0 – 5.5 | Vulnerable | Insyde Software |
| cpe:2.3:a:insyde:insydeh2o:5.5.05.53.22:*:*:*:*:*:*:* | 5.5.05.53.22 | Vulnerable | Insyde Software |
| cpe:2.3:a:insyde:insydeh2o:5.6:*:*:*:*:*:*:* | 5.6 | Vulnerable | Insyde Software |
| cpe:2.3:a:insyde:insydeh2o:5.6.05.60.22:*:*:*:*:*:*:* | 5.6.05.60.22 | Vulnerable | Insyde Software |
- cpe:2.3:a:insyde:insydeh2o:*:*:*:*:*:*:*:* Versions 5.0 – 5.5 Vulnerable ·Insyde Software
- cpe:2.3:a:insyde:insydeh2o:5.5.05.53.22:*:*:*:*:*:*:* Versions 5.5.05.53.22 Vulnerable ·Insyde Software
- cpe:2.3:a:insyde:insydeh2o:5.6:*:*:*:*:*:*:* Versions 5.6 Vulnerable ·Insyde Software
- cpe:2.3:a:insyde:insydeh2o:5.6.05.60.22:*:*:*:*:*:*:* Versions 5.6.05.60.22 Vulnerable ·Insyde Software
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-39283
- 2026-10-03 Alias added: GHSA-hq2f-86fm-7823
References
More Insyde Software Insydeh2o 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-2023-39283 · CVE Program
- CVE-2023-39283 · NVD
- FIRST EPSS
- GHSA-hq2f-86fm-7823 · 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