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Vulnerabilities

Vulnerability · CVE-2025-30383

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Published May 13, 2025 · catalog updated Feb 26, 2026 · Microsoft Microsoft Office LTSC 2024

Check if you run it

No confirmed exploitation is on record for CVE-2025-30383. EPSS is 0.57%. Act only if a listed version of Microsoft Microsoft Office LTSC 2024 is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.57%
Remediation
Version ranges on file
Affected products
vendor Microsoft Microsoft Office LTSC 2024 16.0.0 <https://aka.ms/OfficeSecurityReleases

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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 Microsoft Microsoft Office LTSC 2024 16.0.0 <https://aka.ms/OfficeSecurityReleases16.0.0 <https://aka.ms/OfficeSecurityReleases

How to fix CVE-2025-30383

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-2025-30383. EPSS is 0.57%. Act only if a listed version of Microsoft Microsoft Office LTSC 2024 is installed.

Which versions are affected?

Compare what you have installed with Microsoft Microsoft Office LTSC 2024 16.0.0 <https://aka.ms/OfficeSecurityReleases 16.0.0 <https://aka.ms/OfficeSecurityReleases. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.57%. 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. May 13, 2025 · EUVD

    Detected

    Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

  2. Feb 26, 2026 · EUVD

    Updated

    Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Sources

  • CVE.orgVulnerability recordCVE-2025-30383

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-30383

    30-day exploitation probability 0.6%

    first.org
  • EUVDVulnerability recordEUVD-2025-14452

    Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.