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CVE-2026-70291

Microsoft Office Outlook Remote Code Execution Vulnerability

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

CVSS 3.1 · 9.8 Critical EPSS 1.3% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-105718

Microsoft Excel Remote Code Execution Vulnerability

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

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 5 more
CVE-2026-70287

Microsoft Office Word Remote Code Execution Vulnerability

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

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-70263

Microsoft Office Word Information Disclosure Vulnerability

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

CVSS 3.1 · 6.5 Medium EPSS 1.0% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-105715

Microsoft Office Word Remote Code Execution Vulnerability

Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-97750

Microsoft Office Excel Remote Code Execution Vulnerability

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

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 5 more
CVE-2026-97755

Microsoft Office Excel Remote Code Execution Vulnerability

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

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 6 more
CVE-2026-100209

Microsoft Office Excel Remote Code Execution Vulnerability

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-97011

Microsoft Office Excel Remote Code Execution Vulnerability

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 4 more
CVE-2026-88154

Microsoft Office Excel Information Disclosure Vulnerability

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

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Microsoft 365 Office 2021 and 2 more
CVE-2026-55024

Microsoft Excel Remote Code Execution Vulnerability

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Microsoft
Products
365 Apps Excel Excel 2016 and 12 more