#VU102796 Untrusted search path in Microsoft Office LTSC and Microsoft 365 Apps for Enterprise - CVE-2025-21365

Vulnerability identifier: #VU102796

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-21365

CWE-ID: CWE-426

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Office LTSC
Client/Desktop applications / Other client software
Microsoft 365 Apps for Enterprise
Client/Desktop applications / Office applications

Vendor: Microsoft

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to usage of an untrusted search path in Microsoft Office. A remote attacker can trick a victim to open a specially crafted file and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Microsoft Office LTSC: 2024

Microsoft 365 Apps for Enterprise: 32-bit Systems, 64-bit Systems

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External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-21365

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.