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CVE-2025-53733

Microsoft Office vulnerability

8.4 HIGHEPSS 0.55%
  1. Published12 Aug 2025

Description

Incorrect conversion between numeric types in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft 365 Appsall versions
Microsoft Office2019
Microsoft Office Long Term Servicing Channel2021 · 2024
Microsoft SharePoint Enterprise Server2016
Microsoft SharePoint Server2019
Microsoft Word2016

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2025-53733 being actively exploited?

CVE-2025-53733 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.55%.

How severe is CVE-2025-53733?

CVE-2025-53733 has a CVSS 3.1 base score of 8.4, rated high. EPSS estimates a 0.55% probability of exploitation.

Which products are affected by CVE-2025-53733?

Affected products include Microsoft 365 Apps, Microsoft Office, Microsoft Office Long Term Servicing Channel, Microsoft SharePoint Enterprise Server, Microsoft SharePoint Server, and 1 more.

How do I fix CVE-2025-53733?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-53733 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.