CVE-2023-22616
HIGH
7.8
CVSS Score
Published: April 12, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:35 AM UTC
1 product affected across 1 vendorInsydeH2O
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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
SSVC
PoC
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (3)
ExploitThird Party Advisory
Source: [email protected]
https://research.nccgroup.com/2023/04/11/stepping-insyde-system-management-mode/SSVC — Action Prioritization
SSVCPoCNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.8HIGHCISA-ADP
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-610
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