How severe is CVE-2025-47171?

CVE-2025-47171 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-47171 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-47171?

CVE-2025-47171 primarily affects Microsoft 365 Apps. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-47171?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-47171 have an EU (EUVD) identifier?

Yes. CVE-2025-47171 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17728.

When was CVE-2025-47171 published?

CVE-2025-47171 was published on 2025-06-10 and last updated on 2026-06-17.

CVE-2025-47171

CVE-2025-47171 is a medium-severity vulnerability in Microsoft 365 Apps with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-17728
Weakness: CWE-20
Affected product: Microsoft 365 Apps
Published: 2025-06-10
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2025-47171?: Improper input validation in Microsoft Office Outlook allows an authorized attacker to execute code locally.
How severe is CVE-2025-47171?: CVE-2025-47171 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-47171 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-47171?: CVE-2025-47171 primarily affects Microsoft 365 Apps. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-47171?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-47171 have an EU (EUVD) identifier?: Yes. CVE-2025-47171 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-17728.
When was CVE-2025-47171 published?: CVE-2025-47171 was published on 2025-06-10 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47171

Affected products (5)

cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*

More vulnerabilities in Microsoft 365 Apps

CVE-2024-21413 — Critical (CVSS 9.8): Microsoft Outlook Remote Code Execution Vulnerability
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CVE-2020-0901 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle…
CVE-2023-33150 — Critical (CVSS 9.6): Microsoft Office Security Feature Bypass Vulnerability
CVE-2026-70329 — High (CVSS 8.8): Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a…
CVE-2026-65807 — High (CVSS 8.8): Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker…

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