CVE-2026-80078: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-125) involves an out-of-bounds read in Microsoft 365 Apps for Enterprise, specifically version 16.0.1. An unauthorized attacker could exploit this flaw to disclose sensitive information over a network. The CVSS vector indicates the attack requires no privileges but user interaction, and the confidentiality impact is high while integrity and availability are not affected. Microsoft has published an official fix and manages remediation for this cloud service. No active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information over a network. The confidentiality impact is high, but there is no impact on integrity or availability. The vulnerability does not require privileges but does require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users and administrators should refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80078 for detailed patching and mitigation instructions.
CVE-2026-80078: CWE-125: Out-of-bounds Read in Microsoft Microsoft 365 Apps for Enterprise
Description
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-125) involves an out-of-bounds read in Microsoft 365 Apps for Enterprise, specifically version 16.0.1. An unauthorized attacker could exploit this flaw to disclose sensitive information over a network. The CVSS vector indicates the attack requires no privileges but user interaction, and the confidentiality impact is high while integrity and availability are not affected. Microsoft has published an official fix and manages remediation for this cloud service. No active exploitation has been reported.
Potential Impact
Successful exploitation of this vulnerability could lead to unauthorized disclosure of sensitive information over a network. The confidentiality impact is high, but there is no impact on integrity or availability. The vulnerability does not require privileges but does require user interaction.
Mitigation Recommendations
An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users and administrators should refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80078 for detailed patching and mitigation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-25T18:37:59.828Z
- 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-2026-80078","vendor":"Microsoft"}]
Threat ID: 6aa04566acd9273b49faa2db
Added to database: 09/08/2026, 17:27:02 UTC
Last enriched: 09/08/2026, 18:38:52 UTC
Last updated: 09/08/2026, 20:22:51 UTC
Views: 2
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