CVE-2023-27373

5.5 mediumEPSS 0.2%

Medium (5.5) in insyde insydeh2o. EPSS 0.2% chance of exploitation in the next 30 days.

An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. Due to insufficient input validation, an attacker can tamper with a runtime-accessible EFI variable to cause a dynamic BAR setting to overlap SMRAM.

Severity

CVSS 3.1

5.5 medium

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 6% of CVEs (scores of 2026-10-31)
CWE: CWE-20
Published: 2023-08-07
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

insyde:insydeh2o

References

https://www.insyde.com/security-pledge/SA-2023035
https://www.insyde.com/security-pledge/SA-2023035

Check your stack JSON