CVE-2026-55899 Microsoft Excel Remote Code Execution Vulnerability

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CVE-2026-55899

Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-55899

Microsoft Excel is affected by a stack-based buffer overflow (CVE-2026-55899) that can allow a local attacker to execute code with high impact. The CVSS indicates local access with user interaction required and high confidentiality/integrity/availability impact. Root cause: overflow in Excel’s ha...

CVE-2026-54988 Microsoft Excel Information Disclosure Vulnerability

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CVE-2026-54988 Microsoft Excel Information Disclosure Vulnerability

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CVE-2026-54988

CVE-2026-54988 is an out-of-bounds read vulnerability affecting Microsoft Excel, enabling a local attacker to disclose information. The existing sources confirm the vulnerability in Microsoft Office Excel with local access requiring user interaction, but do not specify exact vulnerable versions, ...

CVE-2026-50675 Microsoft Excel Remote Code Execution Vulnerability

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CVE-2026-50678 Microsoft Excel Information Disclosure Vulnerability

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CVE-2026-50675 Microsoft Excel Remote Code Execution Vulnerability

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CVE-2026-50678

CVE-2026-50678: A heap-based buffer overflow in Microsoft Excel (Office) allows local information disclosure. CVSS v3.1 base score 6.6 (Medium): AV:L, AC:L, PR:N, UI:R, S:U, C:L, I:L, A:H. No exploit details are provided in the accompanying documents; remediation status/patch info not specified.

CVE-2026-50675

CVE-2026-50675 describes a heap-based buffer overflow in Microsoft Office Excel that allows a local attacker to execute code on the affected system. The connected sources confirm the issue is tied to Excel, with a high-severity CVSS 3.1 score (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). No specific vul...

CVE-2026-50678 Microsoft Excel Information Disclosure Vulnerability

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Microsoft Excel Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Microsoft Excel Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Microsoft Excel Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Microsoft Excel Remote Code Execution Vulnerability

Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Microsoft Excel Information Disclosure Vulnerability

Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

Microsoft Excel Remote Code Execution Vulnerability

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

Microsoft Excel Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

Microsoft Excel Remote Code Execution Vulnerability

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally...