CVE-2025-62556: CWE-822: Untrusted Pointer Dereference in Microsoft Microsoft 365 Apps for Enterprise
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2025-62556 and categorized under CWE-822 (Untrusted Pointer Dereference), affects Microsoft Office Excel in Microsoft 365 Apps for Enterprise version 16.0.1. It allows an attacker with local access and user interaction to execute arbitrary code by exploiting improper handling of pointers. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability has been published and a patch is available, though no known exploits are reported in the wild.
Potential Impact
Successful exploitation of this vulnerability can result in local code execution by an unauthorized attacker, leading to complete compromise of confidentiality, integrity, and availability of the affected system. The attacker requires local access and user interaction to trigger the vulnerability. There are no known active exploits in the wild at this time.
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. No additional mitigations are specified or required beyond applying the patch.
CVE-2025-62556: CWE-822: Untrusted Pointer Dereference in Microsoft Microsoft 365 Apps for Enterprise
Description
Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2025-62556 and categorized under CWE-822 (Untrusted Pointer Dereference), affects Microsoft Office Excel in Microsoft 365 Apps for Enterprise version 16.0.1. It allows an attacker with local access and user interaction to execute arbitrary code by exploiting improper handling of pointers. The CVSS v3.1 base score is 7.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability has been published and a patch is available, though no known exploits are reported in the wild.
Potential Impact
Successful exploitation of this vulnerability can result in local code execution by an unauthorized attacker, leading to complete compromise of confidentiality, integrity, and availability of the affected system. The attacker requires local access and user interaction to trigger the vulnerability. There are no known active exploits in the wild at this time.
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. No additional mitigations are specified or required beyond applying the patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-10-15T17:11:21.220Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 693867e774ebaa3babafb42c
Added to database: 12/09/2025, 18:18:15 UTC
Last enriched: 04/17/2026, 11:15:44 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 208
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