High severity · published Jul 14, 2026
CVE-2026-55032
Microsoft Word Remote Code Execution Vulnerability
7.8
CVSS
0.6%
EPSS
No
On KEV
Description
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 47% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OF
Office · Microsoft
All versions, or not specified · source: NVD
SH
SharePoint · Microsoft
before 16.0.19725.20434; 2016; 2019 · source: NVD
M3
Microsoft 365 Apps for Enterprise · Microsoft
16.0.1 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office 2019 · Microsoft
19.0.0 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office 365 for Mac · Microsoft
1.0.0 before 16.111.26071215 · source: vendor
MO
Microsoft Office LTSC 2021 · Microsoft
16.0.1 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office LTSC 2024 · Microsoft
16.0.0 before https://aka.ms/OfficeSecurityReleases · source: vendor
MO
Microsoft Office LTSC for Mac 2021 · Microsoft
16.0.1 before 16.111.26071215 · source: vendor
MO
Microsoft Office LTSC for Mac 2024 · Microsoft
16.0.0 before 16.111.26071215 · source: vendor
MS
Microsoft SharePoint Enterprise Server 2016 · Microsoft
16.0.0 before 16.0.5561.1001 · source: vendor
MS
Microsoft SharePoint Server 2019 · Microsoft
16.0.0 before 16.0.10417.20175 · source: vendor
MS
Microsoft SharePoint Server Subscription Edition · Microsoft
16.0.0 before 16.0.19725.20434 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55032
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55032
vendor-advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55032
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