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Vulnerabilities

Vulnerability · CVE-2025-47171

Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.

Published Jun 10, 2025 · catalog updated Feb 26, 2026 · Microsoft Microsoft 365 Apps for Enterprise

Check if you run it

No confirmed exploitation is on record for CVE-2025-47171. EPSS is 1.68%. Act only if a listed version of Microsoft Microsoft 365 Apps for Enterprise is installed.

Severity
Medium6.7
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.68%
Remediation
Version ranges on file
Affected products
vendor Microsoft Microsoft 365 Apps for Enterprise 16.0.1 <https://aka.ms/OfficeSecurityReleases

Improper input validation in Microsoft Office Outlook allows an authorized 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 365 Apps for Enterprise 16.0.1 <https://aka.ms/OfficeSecurityReleases16.0.1 <https://aka.ms/OfficeSecurityReleases

How to fix CVE-2025-47171

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-2025-47171. EPSS is 1.68%. Act only if a listed version of Microsoft Microsoft 365 Apps for Enterprise is installed.

Which versions are affected?

Compare what you have installed with Microsoft Microsoft 365 Apps for Enterprise 16.0.1 <https://aka.ms/OfficeSecurityReleases 16.0.1 <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 1.68%. 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. Jun 10, 2025 · EUVD

    Detected

    Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.

  2. Feb 26, 2026 · EUVD

    Updated

    Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.

Sources

  • FIRST EPSSExploitation probabilityCVE-2025-47171

    30-day exploitation probability 1.7%

    first.org
  • EUVDVulnerability recordEUVD-2025-17728

    Improper input validation in Microsoft Office Outlook allows an authorized 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.