CVE-2025-54905

Information disclosure via untrusted pointer dereference

Published Sep 9, 2025 · Updated Sep 9, 2025

Untrusted pointer dereference in Microsoft Word allows local users to disclose information through required user interaction. Microsoft has not disclosed the affected function, pointer source, or operation that makes the dereference reachable. Exploitation occurs in a local attack context and can expose information or interrupt the affected application or service, with no integrity impact reported.

CVSS severity7.1
High
EPSS probability0.63%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Untrusted pointer dereference in Microsoft Word allows local users to disclose information through required user interaction. Microsoft has not disclosed the affected function, pointer source, or operation that makes the dereference reachable. Exploitation occurs in a local attack context and can expose information or interrupt the affected application or service, with no integrity impact reported.

The record

CVE
CVE-2025-54905
Published
Sep 9, 2025
Updated
Sep 9, 2025
Vendor
Microsoft
Product
Microsoft Office LTSC for Mac 2024
Classifications
CWE-822, T1204
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 9, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=N/A

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Microsoft Office LTSC for Mac 2024version=N/A
Microsoft · Microsoft Office 2019version=19.0.0 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft SharePoint Enterprise Server 2016version=16.0.0 <16.0.5517.1000
Microsoft · Microsoft Office LTSC for Mac 2021version=N/A
Microsoft · Microsoft SharePoint Server 2019version=16.0.0 <16.0.10417.20047
Microsoft · Microsoft Office LTSC 2021version=16.0.1 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft Word 2016version=16.0.1 <16.0.5517.1000
Microsoft · Microsoft Office LTSC 2024version=16.0.0 <https://aka.ms/OfficeSecurityReleases
Microsoft · Microsoft 365 Apps for enterpriseversion=16.0.1 <https://aka.ms/OfficeSecurityReleases

Published CVSS scores

7.1MicrosoftCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-822Untrusted Pointer Dereference
T1204User Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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