CVE-2026-55120: Microsoft PowerPoint Remote Code Execution Vulnerability
Published Jul 14, 2026
·Updated
Heap-based buffer overflow in Microsoft Office PowerPoint allows an unauthorized attacker to execute code locally.
Other sources
Microsoft PowerPoint Remote Code Execution Vulnerability
— Microsoft
Affected Software
26 affected componentsFixes available
Microsoft Office 2019 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office 2019 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2021<16.111.26071215
16.111.26071215
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft PowerPoint 2016<16.0.5561.1000
16.0.5561.1000
Microsoft Office 365 for Mac<16.111.26071215
16.111.26071215
Microsoft PowerPoint 2016<16.0.5561.1000
16.0.5561.1000
Microsoft Office LTSC 2024 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2024<16.111.26071215
16.111.26071215
Microsoft Office LTSC 2024 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps
Microsoft 365 Apps
Microsoft Microsoft 365 Macos
Microsoft Office 2019
Microsoft Office 2019
Microsoft Office 2021
Microsoft Office 2021
Microsoft Office 2021 Macos
Microsoft Office 2024
Microsoft Office 2024
Microsoft Office 2024 Macos
Microsoft PowerPoint=2016
Microsoft PowerPoint=2016
Remediation
Event History
Jul 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
SeverityAffected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:09 PM
Data Sourced
via MITRE·05:09 PM
DescriptionSeverity
Data Sourced
via NVD·06:18 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-55120?
The severity of CVE-2026-55120 is rated high with a score of 7.8.
2
How can I fix CVE-2026-55120?
You can fix CVE-2026-55120 by applying the latest security patch released by Microsoft.
3
What type of vulnerability is represented by CVE-2026-55120?
CVE-2026-55120 is a heap-based buffer overflow vulnerability in Microsoft PowerPoint.
4
Which software versions are affected by CVE-2026-55120?
CVE-2026-55120 affects versions of Microsoft PowerPoint, including Microsoft 365 Apps, Office 2016, 2019, 2021, and 2024.
5
What can an attacker achieve by exploiting CVE-2026-55120?
An attacker exploiting CVE-2026-55120 could execute code locally on the affected machine.