CVE-2025-47994 — Deserialization of Untrusted Data in Microsoft 365 Apps FOR Enterprise

CWE-502 — Deserialization of Untrusted Data4 documents4 sources
Severity
8.6HIGHNVD
CNA7.8
EPSS
1.1%
top 22.00%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
Microsoft 365 Apps FOR EnterpriseMicrosoft Office 2016Microsoft Office 2019+5 more
Timeline
PublishedJul 8

Description

Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HExploitability: 1.8 | Impact: 6.0

Affected Packages8 packages

▶CVEListV5microsoft/microsoft_office_201616.0.0 — 16.0.5508.1001
▶CVEListV5microsoft/microsoft_office_201919.0.0 — https://aka.ms/OfficeSecurityReleases
▶CVEListV5microsoft/microsoft_office_ltsc_202116.0.1 — https://aka.ms/OfficeSecurityReleases
▶CVEListV5microsoft/microsoft_office_ltsc_202416.0.0 — https://aka.ms/OfficeSecurityReleases
▶NVDmicrosoft/office2016, 2019+1

🔴Vulnerability Details

2
GHSA
GHSA-c957-43mv-gcvv: Deserialization of untrusted data in Microsoft Office allows an unauthorized attacker to elevate privileges locally↗2025-07-08
▶
CVEList
Microsoft Office Elevation of Privilege Vulnerability↗2025-07-08
▶

📋Vendor Advisories

1
Microsoft
Microsoft Office Elevation of Privilege Vulnerability↗2025-07-08
▶