CVE Vulnerabilities

CVE-2025-47994

Deserialization of Untrusted Data

Published: Jul 08, 2025 | Modified: Jul 15, 2025
CVSS 3.x
8.6
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

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

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Name Vendor Start Version End Version
365_apps Microsoft - (including) - (including)
Office Microsoft 2016 (including) 2016 (including)
Office Microsoft 2019 (including) 2019 (including)
Office_long_term_servicing_channel Microsoft 2021 (including) 2021 (including)
Office_long_term_servicing_channel Microsoft 2024 (including) 2024 (including)
Sharepoint_enterprise_server Microsoft 2016 (including) 2016 (including)

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References