CVE-2026-78513: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
CVE-2026-78513 is an out-of-bounds read vulnerability in Microsoft Office PowerPoint within Microsoft 365 Apps for Enterprise. It allows an unauthorized attacker to locally disclose information. The vulnerability has a medium severity with a CVSS score of 5.5. An official fix is available from Microsoft. The vulnerability affects version 16.0.1 of the product. Microsoft manages remediation for this cloud-hosted service and has published an advisory with patch details.
AI Analysis
Technical Summary
This vulnerability (CWE-125) involves an out-of-bounds read in Microsoft Office PowerPoint, part of Microsoft 365 Apps for Enterprise, which can lead to local information disclosure by an unauthorized attacker. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no privileges but requires user interaction. The impact is confidentiality loss without integrity or availability impact. Microsoft has released an official fix and manages remediation for this cloud service. The affected version is 16.0.1.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to disclose sensitive information from the affected system. There is no impact on integrity or availability. The confidentiality impact is rated high by CVSS, but overall severity is medium.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users and administrators should apply the official update as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78513 to mitigate this vulnerability.
CVE-2026-78513: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
Description
CVE-2026-78513 is an out-of-bounds read vulnerability in Microsoft Office PowerPoint within Microsoft 365 Apps for Enterprise. It allows an unauthorized attacker to locally disclose information. The vulnerability has a medium severity with a CVSS score of 5.5. An official fix is available from Microsoft. The vulnerability affects version 16.0.1 of the product. Microsoft manages remediation for this cloud-hosted service and has published an advisory with patch details.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-125) involves an out-of-bounds read in Microsoft Office PowerPoint, part of Microsoft 365 Apps for Enterprise, which can lead to local information disclosure by an unauthorized attacker. The CVSS 3.1 vector indicates the attack requires local access with low complexity and no privileges but requires user interaction. The impact is confidentiality loss without integrity or availability impact. Microsoft has released an official fix and manages remediation for this cloud service. The affected version is 16.0.1.
Potential Impact
An unauthorized attacker with local access and user interaction can exploit this vulnerability to disclose sensitive information from the affected system. There is no impact on integrity or availability. The confidentiality impact is rated high by CVSS, but overall severity is medium.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages the remediation server-side. Users and administrators should apply the official update as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78513 to mitigate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-24T17:28:00.622Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Is Cloud Service
- true
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78513","vendor":"Microsoft"}]
Threat ID: 6aa04563acd9273b49faa23d
Added to database: 09/08/2026, 17:26:59 UTC
Last enriched: 09/08/2026, 22:53:37 UTC
Last updated: 09/08/2026, 22:53:37 UTC
Views: 3
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