CVE-2026-70315: 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 locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-70315) involves an out-of-bounds read (CWE-125) in Microsoft 365 Apps for Enterprise. It allows an unauthorized attacker to read memory beyond the intended bounds, potentially disclosing sensitive information locally. The vulnerability has a CVSS 3.1 base score of 5.5, indicating medium severity, with attack vector local, low attack complexity, no privileges required, and user interaction required. The confidentiality impact is high, with no impact on integrity or availability. Microsoft has published an official fix and manages remediation for this cloud service.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to disclose sensitive information from memory. There is no impact on system integrity or availability. The confidentiality impact is rated high, meaning sensitive data could be exposed.
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 consult the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70315 for detailed patching and mitigation instructions.
CVE-2026-70315: 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 locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-70315) involves an out-of-bounds read (CWE-125) in Microsoft 365 Apps for Enterprise. It allows an unauthorized attacker to read memory beyond the intended bounds, potentially disclosing sensitive information locally. The vulnerability has a CVSS 3.1 base score of 5.5, indicating medium severity, with attack vector local, low attack complexity, no privileges required, and user interaction required. The confidentiality impact is high, with no impact on integrity or availability. Microsoft has published an official fix and manages remediation for this cloud service.
Potential Impact
An unauthorized local attacker can exploit this vulnerability to disclose sensitive information from memory. There is no impact on system integrity or availability. The confidentiality impact is rated high, meaning sensitive data could be exposed.
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 consult the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70315 for detailed patching and mitigation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-04T00:01:20.933Z
- 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-2026-70315","vendor":"Microsoft"}]
Threat ID: 6a7b583ebf8831d53915678a
Added to database: 08/11/2026, 17:13:34 UTC
Last enriched: 08/11/2026, 17:43:28 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 3
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.