CVE-2026-55034

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 7.3 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019 and 1 more

CVE-2026-55045

Microsoft Office Remote Code Execution Vulnerability

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

CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Microsoft 365 Apps For Enterprise and 17 more

CVE-2026-55127

Microsoft Word Remote Code Execution Vulnerability

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

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2019 and 12 more

CVE-2026-55035

Microsoft Office Information Disclosure Vulnerability

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

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Microsoft 365 Apps For Enterprise and 17 more

CVE-2026-55051

Microsoft SharePoint Server Information Disclosure Vulnerability

Server-side request forgery (ssrf) in Microsoft Office SharePoint allows an authorized attacker to disclose information over a network.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019 and 1 more

CVE-2026-55142

Microsoft Word Information Disclosure Vulnerability

Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Microsoft Office Ltsc 2021 and 11 more

CVE-2026-55128

Microsoft Word Remote Code Execution Vulnerability

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

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Microsoft Office 365 For Mac and 13 more

CVE-2026-55130

Microsoft Word Remote Code Execution Vulnerability

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

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Office 2019 Office 2021 and 7 more

CVE-2026-55135

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019 and 1 more

CVE-2026-56157

Microsoft SharePoint Server Spoofing Vulnerability

Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019 and 1 more

CVE-2026-62826

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Enterprise Server 2016 Sharepoint Server Sharepoint Server 2016 and 2 more

CVE-2026-50522

Microsoft SharePoint Remote Code Execution Vulnerability

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 9.8 Critical EPSS 3.0% KEV · Listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019

CVE-2026-55027

Microsoft Office Information Disclosure Vulnerability

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

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2016 and 9 more

CVE-2026-58644

Microsoft SharePoint Remote Code Execution Vulnerability

Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.

CVSS 3.1 · 9.8 Critical EPSS 15.9% KEV · Listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019

CVE-2026-55050

Microsoft Word Information Disclosure Vulnerability

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

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2019 and 11 more

CVE-2026-55026

Microsoft Office Information Disclosure Vulnerability

Integer overflow or wraparound in Microsoft Office allows an unauthorized attacker to disclose information locally.

CVSS 3.1 · 6.2 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2016 and 9 more

CVE-2026-55020

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019

CVE-2026-55124

Microsoft Word Information Disclosure Vulnerability

Improper validation of specified type of input in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2019 and 11 more

CVE-2026-55028

Microsoft Office Information Disclosure Vulnerability

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

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

365 Apps Microsoft 365 Office 2016 and 9 more

CVE-2026-55016

Microsoft SharePoint Server Spoofing Vulnerability

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS 3.1 · 4.6 Medium EPSS < 1% KEV · Not listed

Vendors

Microsoft

Products

Sharepoint Server Sharepoint Server 2016 Sharepoint Server 2019