Security Updates for Microsoft Visio Products C2R (October 2026)

The Microsoft Visio Products are missing security updates. It is, therefore, affected by multiple vulnerabilities: - Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network. CVE-2026-102855, CVE-2026-102856, CVE-2026-102857 Note that...

CVE-2026-102855

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102857

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102856

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

EUVD-2026-99039

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

EUVD-2026-100598

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

EUVD-2026-99040

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102855

A Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to achieve remote code execution over a network. This vulnerability has a CVSS base score of 8.8 . While the documents do not provide specific details on the vulnerable component or file, Microsoft has released...

CVE-2026-102857

A heap-based buffer overflow exists in Microsoft Office Visio , which could allow an unauthorized attacker to execute code over a network . This vulnerability is associated with CWE-122 (Heap-based Buffer Overflow) and CWE-193 (Off-by-one Error). While the documents confirm the vulnerability's pr...

CVE-2026-102856

A heap-based buffer overflow exists in Microsoft Office Visio that allows an unauthorized attacker to execute code over a network. This vulnerability involves a CWE-122 heap-based buffer overflow and a CWE-190 integer overflow or wraparound. Exploitation would allow an attacker to execute arbitra...

vulnerabilities present in Microsoft Office

Microsoft has fixed xxx vulnerabilities in various Office products, such as Word, Excel, Access, Outlook, Visio, SharePoint, and PowerPoint, as well as subcomponents like Shell, Azure Key Vault, and Click-to-Run. A malicious actor could exploit these vulnerabilities to cause a denial-of, gain...

Microsoft Office Visio Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

Microsoft Office Visio Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

Microsoft Office Visio Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

PT-2026-111942

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102856: Heap-based Buffer Overflow

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102857: Heap-based Buffer Overflow

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

PT-2026-111941

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

CVE-2026-102855: Heap-based Buffer Overflow

Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network...

PT-2026-111940

Name of the Vulnerable Software and Affected Versions Microsoft Office Visio affected versions not specified Description A heap-based buffer overflow exists in Microsoft Office Visio. This issue occurs when the application fails to properly manage memory allocation in the heap, which is a region ...