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TI-2025-03941 Aliases CVE-2025-4421GHSA-39h4-c5qq-2w56

EfiSmiServices: gEfiSmmCpuProtocol, SMM memory corruption vulnerabilities in SMM module

Priority LOW 37CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

The vulnerability was identified in the code developed specifically for Lenovo. Please visit "Lenovo Product Security Advisories and Announcements" webpage for more information about the vulnerability.  https://support.lenovo.com/us/en/product_security/home

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00244 15th percentileScored 2026-11-07
Fix Fixed InsydeH2O (Insyde Software): L05.05.40.011803.172079

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Insyde SoftwareInsydeH2OFeature developed for Lenovo to before L05.05.40.011803.172079L05.05.40.011803.172079Patch availableCNA
  • InsydeH2O VendorInsyde Software Affected Feature developed for Lenovo to before L05.05.40.011803.172079 Fixed in L05.05.40.011803.172079 Patch available CNA

Remediation

  • Fix · CNA InsydeH2O (Insyde Software) Fixed in L05.05.40.011803.172079

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Insyde Software InsydeH2O L05.05.40.011803.172079

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2025-03945 SetupAutomationSmm: Stack overflow vulnerability in SMI handlerPriority LOW 37
    • TI-2025-03943 SetupAutomationSmm:Vulnerability in the SMM module allow attacker to write arbitrary code and lead to memory corruptionPriority LOW 37
    • TI-2025-03942 EfiSmiServices : EfiPcdProtocol, SMM memory corruption vulnerabilities in SMM modulePriority LOW 37
    Show all 6 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-4421
  2. 2026-10-03 Alias added: GHSA-39h4-c5qq-2w56

References

Other 2

  • TI-2023-08797 An issue was discovered in ChipsetSvcSmm in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.8
  • TI-2022-16772 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
  • TI-2022-16681 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
  • TI-2022-16323 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
  • TI-2022-15984 An issue was discovered in Insyde InsydeH2O with kernel 5.0 through 5.5. CVSS 3.1HIGH 8.2
  • TI-2023-08799 An issue was discovered in Insyde InsydeH2O with kernel 5.2 through 5.5. CVSS 3.1HIGH 7.8
See all 126 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences