High severity · published Apr 12, 2023
CVE-2023-22616
An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5
7.8
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Insydeh2o · Insyde
5.2 through 5.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-22616
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-22616
Exploit
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
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