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-2026-99040

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...

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...

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...

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...

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...

PT-2026-111940

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...

PT-2026-111942

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...

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...

Microsoft Office Visio Code Execution Vulnerability (CNVD-2026-00030)

Microsoft Office Visio is a U.S. Microsoft Microsoft Office software series responsible for drawing flowcharts and schematic diagrams in the software. A code execution vulnerability exists in Microsoft Office Visio, which can be exploited by an attacker to execute arbitrary code on a system...