CVE-2026-26108: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft 365 Apps for Enterprise
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26108) involves a heap-based buffer overflow in Microsoft Office Excel, part of Microsoft 365 Apps for Enterprise version 16.0.1. The flaw could enable an unauthorized attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no privileges, and user interaction, but results in high confidentiality, integrity, and availability impacts. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow). A patch is available from Microsoft to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system with the privileges of the current user, potentially leading to full compromise of confidentiality, integrity, and availability of the system. However, exploitation requires local access and user interaction. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Microsoft 365 Apps for Enterprise version 16.0.1 to remediate this issue. Since this is not a cloud service, remediation depends on applying the patch on affected endpoints.
CVE-2026-26108: CWE-122: Heap-based Buffer Overflow in Microsoft Microsoft 365 Apps for Enterprise
Description
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26108) involves a heap-based buffer overflow in Microsoft Office Excel, part of Microsoft 365 Apps for Enterprise version 16.0.1. The flaw could enable an unauthorized attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates the attack requires local access with low complexity, no privileges, and user interaction, but results in high confidentiality, integrity, and availability impacts. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow). A patch is available from Microsoft to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system with the privileges of the current user, potentially leading to full compromise of confidentiality, integrity, and availability of the system. However, exploitation requires local access and user interaction. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for this vulnerability. It is recommended to apply the official Microsoft update for Microsoft 365 Apps for Enterprise version 16.0.1 to remediate this issue. Since this is not a cloud service, remediation depends on applying the patch on affected endpoints.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T15:52:13.910Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b0562fea502d3aa87d6af7
Added to database: 3/10/2026, 5:34:39 PM
Last enriched: 4/18/2026, 2:15:00 PM
Last updated: 4/28/2026, 7:21:20 AM
Views: 143
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