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16,745Advisories collected
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16,745 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-2026-97779
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 productsOffice Online Server, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Fixed versions16.0.10417.20228, 16.114.26101123, 16.0.14334.20974, 16.0.17932.21056
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97775
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97773
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97772
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsOffice Online Server, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Fixed versions16.0.10417.20228, 16.114.26101123, 16.0.14334.20974, 16.0.17932.21056
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97771
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97770
HighCVSS 8.8
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.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97769
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97768
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsOffice Online Server, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions
Fixed versions16.0.10417.20228, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97766
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsOffice Online Server, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions
Fixed versions16.0.10417.20228, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97763
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97762
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsOffice Online Server, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Fixed versions16.0.10417.20228, 16.114.26101123, 16.0.14334.20974, 16.0.17932.21056
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97760
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 LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97757
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97754
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024, Microsoft Office LTSC 2021 for 64-bit editions
Fixed versions16.114.26101123, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97752
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97751
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97750
HighCVSS 8.8
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.
Affected productsOffice Online Server, Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions
Fixed versions16.0.10417.20228, 16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97748
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97747
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsOffice Online Server, Microsoft Office 365 for Mac, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Fixed versions16.0.10417.20228, 16.114.26101123, 16.0.14334.20974, 16.0.17932.21056
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97746
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97744
HighCVSS 5.5
Microsoft Office PowerPoint Information Disclosure Vulnerability
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-97743
HighCVSS 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft 365 Apps for Enterprise for 64-bit Systems, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024
Fixed versionshttps://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes
Microsoft Security Response CenterCVE-2026-97740
HighCVSS 6.5
Microsoft Office Excel Information Disclosure Vulnerability
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Microsoft Security Response CenterCVE-2026-97738
HighCVSS 8.8
Microsoft Office Excel Remote Code Execution Vulnerability
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected productsMicrosoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions
Fixed versions16.0.14334.20974, 16.0.17932.21056, https://aka.ms/OfficeSecurityReleases, 16.114.26101123
Vendor guidance
Release Notes Install KB5002928.
Before you act
Start with the vendor's bulletin.
We normalize the fields that vendors publish so you can search and compare advisories in one place. We do not replace the original bulletin or turn a product-name match into proof that a system is vulnerable.
Confirm the installed product and version, read the linked vendor guidance, and test the recommended update or mitigation through your normal change process.