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Vulnerabilities

Vulnerability · CVE-2025-4423

The vulnerability was identified in the code developed specifically for Lenovo.

Published Jul 30, 2025 · catalog updated Aug 14, 2025 · Insyde Software InsydeH2O

Last checked Oct 29, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-4423. EPSS is 0.18%. Act only if a listed version of Insyde Software InsydeH2O is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High8.2
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.18%
Remediation
Version ranges on file
Affected products
vendor Insyde Software InsydeH2O Feature developed for Lenovo <L05.05.40.011803.172079

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Insyde Software InsydeH2O Feature developed for Lenovo <L05.05.40.011803.172079Feature developed for Lenovo <L05.05.40.011803.172079

How to fix CVE-2025-4423

  • Upgrade

    CVE-2025-4423 lists a fix boundary at L05.05.40.011803.172079. Compare the installed build with that boundary before you change production.

  • Version check

    Seen in Feature developed for Lenovo <L05.05.40.011803.172079

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-4423. EPSS is 0.18%. Act only if a listed version of Insyde Software InsydeH2O is installed.

Which versions are affected?

Compare what you have installed with Insyde Software InsydeH2O Feature developed for Lenovo <L05.05.40.011803.172079 Feature developed for Lenovo <L05.05.40.011803.172079. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.18%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 30, 2025 · EUVD

    Detected

    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

  2. Aug 14, 2025 · EUVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2025-4423

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4423

    30-day exploitation probability 0.18%

    first.org
  • EUVDVulnerability recordEUVD-2025-23141

    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

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 29, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 20, 2026