CVE-2026-47635: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Office LTSC 2024
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47635) involves a heap-based buffer overflow in Microsoft Office LTSC 2024 (version 16.0.0). It enables an unauthorized attacker to execute code locally on the affected system. The CVSS 3.1 vector indicates low attack complexity and no required privileges or user interaction, with high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation of this heap-based buffer overflow can lead to local code execution with high impact on system confidentiality, integrity, and availability. This could allow an attacker to run arbitrary code on the affected system without requiring privileges or user interaction.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47635 to remediate this issue.
CVE-2026-47635: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft Office LTSC 2024
Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 8.4high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47635) involves a heap-based buffer overflow in Microsoft Office LTSC 2024 (version 16.0.0). It enables an unauthorized attacker to execute code locally on the affected system. The CVSS 3.1 vector indicates low attack complexity and no required privileges or user interaction, with high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
Successful exploitation of this heap-based buffer overflow can lead to local code execution with high impact on system confidentiality, integrity, and availability. This could allow an attacker to run arbitrary code on the affected system without requiring privileges or user interaction.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as detailed in their advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47635 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-19T20:12:27.070Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47635","vendor":"Microsoft"}]
Threat ID: 6a284cf08dd33fbd85665055
Added to database: 06/09/2026, 17:27:12 UTC
Last enriched: 07/29/2026, 22:05:26 UTC
Last updated: 07/31/2026, 21:26:45 UTC
Views: 80
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