Home/CVE/An issue was discovered in IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls t
CVE

CVE-2023-39284

An issue was discovered in IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls t

An issue was discovered in IhisiServicesSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. There are arbitrary calls to SetVariable with unsanitized arguments in the SMI handler.

MEDIUM · CVSS 5.5 EPSS 0.00044
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
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Affected Products & Versions

5
insyde insydeh2o>= 5.2 and < 5.2.05.28.33
insyde insydeh2o>= 5.3 and < 5.3.05.37.33
insyde insydeh2o>= 5.4 and < 5.4.05.45.33
insyde insydeh2o>= 5.5 and < 5.5.05.53.33
insyde insydeh2o>= 5.6 and < 5.6.05.60.33
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Scoring & Timeline

5.5
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Nov 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.insyde.com/security-pledgeVendor Advisory
https://www.insyde.com/security-pledge/SA-2023056Vendor Advisory
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