CVE-2023-39283

7.8 highEPSS 0.2%

High (7.8) in insyde insydeh2o. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.8 high

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2023-11-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

insyde:insydeh2o

References

https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2023055
https://www.insyde.com/security-pledge
https://www.insyde.com/security-pledge/SA-2023055

Check your stack JSON