HIGH
Microsoft Office Remote Code Execution Vulnerability
Published Aug 11, 2026
7.8
HIGHCVSS 3.1
EPSS 0.47%
Description
Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.
Affected products
-
Affected
- ≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases
-
Affected
- ≥ 19.0.0, < https://aka.ms/OfficeSecurityReleases
-
Affected
- ≥ 1.0.0, < 16.112.26081010
-
Affected
- ≥ 16.0.1, < https://aka.ms/OfficeSecurityReleases
-
Affected
- ≥ 16.0.0, < https://aka.ms/OfficeSecurityReleases
-
Affected
- ≥ 16.0.1, < 16.112.26081010
-
Affected
- ≥ 16.0.0, < 16.112.26081010
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | unknown | Affected
|
| Microsoft | Microsoft Office 2019 | unknown | Affected
|
| Microsoft | Microsoft Office 365 for Mac | unknown | Affected
|
| Microsoft | Microsoft Office LTSC 2021 | unknown | Affected
|
| Microsoft | Microsoft Office LTSC 2024 | unknown | Affected
|
| Microsoft | Microsoft Office LTSC for Mac 2021 | unknown | Affected
|
| Microsoft | Microsoft Office LTSC for Mac 2024 | unknown | Affected
|
OR
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No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (2)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-56426 Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65657 vendor-advisorypatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-56426 | Advisory | |
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65657 | vendor-advisorypatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Aug 11, 2026
Updated Sep 29, 2026
Reserved Jul 22, 2026
Link CVE-2026-65657
CISA Vulnrichment
Updated Aug 11, 2026
Red Hat
No data
GitHub
No data