CVE-2023-22616
HIGHInsyde InsydeH2O 5.2-5.5 - SMRAM Corruption via IhisiSmm Driver Save State Register
Title source: llmDescription
An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. The Save State register is not checked before use. The IhisiSmm driver does not check the value of a save state register before use. Due to insufficient input validation, an attacker can corrupt SMRAM.
References (3)
Core 3
Core References
Exploit, Third Party Advisory
https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode/
Vendor Advisory
https://www.insyde.com/security-pledge
Vendor Advisory
https://www.insyde.com/security-pledge/SA-2023022
Scores
CVSS v3
7.8
EPSS
0.0037
EPSS Percentile
28.5%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-610
Status
published
Products (1)
insyde/insydeh2o
5.2 - 5.5
Published
Apr 12, 2023
Tracked Since
Feb 18, 2026