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4,737 advisories
Each date says whether the vendor published or updated the bulletin. A vendor bulletin describes products that may be affected. It does not prove that the vulnerable product or version is installed in your environment.
Microsoft Security Response CenterCVE-2026-80089
HighCVSS 6.5
Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes Install KB5002916.
Microsoft Security Response CenterCVE-2026-80088
HighCVSS 6.5
Microsoft Office Word Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002916.
Microsoft Security Response CenterCVE-2026-80087
HighCVSS 6.5
Microsoft Office Information Disclosure Vulnerability
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002916.
Microsoft Security Response CenterCVE-2026-80086
HighCVSS 6.5
Microsoft Office PowerPoint Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80085
HighCVSS 8.8
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.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002923.
Microsoft Security Response CenterCVE-2026-80084
HighCVSS 6.5
Microsoft Office Outlook Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002898.
Microsoft Security Response CenterCVE-2026-80082
HighCVSS 6.5
Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80081
HighCVSS 8.8
Microsoft Office PowerPoint Remote Code Execution Vulnerability
Use after free in Microsoft Office PowerPoint allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.20326.20138
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80079
HighCVSS 6.5
Microsoft Office Word Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002923.
Microsoft Security Response CenterCVE-2026-80078
HighCVSS 6.5
Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80077
HighCVSS 8.8
Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Affected productsRemote Desktop client for Windows Desktop
Fixed versions1.2.7279.0
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80076
HighCVSS 6.5
Microsoft Office Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80075
HighCVSS 7.8
Windows Work Folders Elevation of Privilege Vulnerability
Heap-based buffer overflow in Windows Work Folders allows an authorized attacker to elevate privileges locally.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9245, 10.0.20348.5622, 10.0.19044.7725, 10.0.19045.7725
Vendor guidance
Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099. Install KB5123066.
Microsoft Security Response CenterCVE-2026-80074
HighCVSS 8.8
Remote Desktop Client Remote Code Execution Vulnerability
Heap-based buffer overflow in Remote Desktop Client allows an unauthorized attacker to execute code over a network.
Affected productsRemote Desktop client for Windows Desktop
Fixed versions1.2.7279.0
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-80073
HighCVSS 6.5
Microsoft Office Outlook Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002919.
Microsoft Security Response CenterCVE-2026-78526
HighCVSS 8.8
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.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes Install KB5002898.
Microsoft Security Response CenterCVE-2026-78524
HighCVSS 8.8
Microsoft Office Remote Code Execution Vulnerability
Out-of-bounds write in Microsoft Office allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002916.
Microsoft Security Response CenterCVE-2026-78523
HighCVSS 5.9
Windows DNS Server Denial of Service Vulnerability
Use after free in Windows DNS allows an unauthorized attacker to deny service over a network.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9245, 10.0.20348.5622, 10.0.26100.33438, 10.0.14393.9512
Vendor guidance
Install KB5122876. Install KB5122882. Install KB5122871. Install KB5123099. Install KB5123065. Install KB5123066.
Microsoft Security Response CenterCVE-2026-78522
HighCVSS 6.5
Microsoft Office Word Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002923.
Microsoft Security Response CenterCVE-2026-78521
HighCVSS 8.8
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.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002923.
Microsoft Security Response CenterCVE-2026-78518
HighCVSS 8.8
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.
Affected productsMicrosoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft 365 Apps for Enterprise for 64-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002914. Install KB5002904.
Microsoft Security Response CenterCVE-2026-78517
HighCVSS 8.8
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.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.0.14334.20906, 16.0.17932.20976
Vendor guidance
Release Notes Install KB5002923.
Microsoft Security Response CenterCVE-2026-78516
HighCVSS 4.3
Windows Storage Information Disclosure Vulnerability
Buffer over-read in Windows Storage allows an unauthorized attacker to disclose information with a physical attack.
Affected productsWindows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019, Windows Server 2019 (Server Core installation)
Fixed versions10.0.17763.9245, 10.0.20348.5622, 10.0.19044.7725, 10.0.19045.7725
Vendor guidance
Install KB5122876. Install KB5122882. Install KB5122878. Install KB5122871. Install KB5124008. Install KB5122880. Install KB5124012. Install KB5123099. Install KB5123065. Install KB5123066.
Microsoft Security Response CenterCVE-2026-78515
HighCVSS 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office 2019 for 32-bit editions, Microsoft Office 2019 for 64-bit editions, Microsoft 365 Apps for Enterprise for 32-bit Systems
Fixed versions16.0.10417.20207, 16.0.20326.20138, 16.112.26083020, 16.0.14334.20906
Vendor guidance
Release Notes Install KB5002916.
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Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.
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