#VU106391 Link following in Deep Security - CVE-2025-30640

Vulnerability identifier: #VU106391

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-30640

CWE-ID: CWE-59

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Deep Security
Client/Desktop applications / Software for system administration

Vendor: Trend Micro

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insecure link following issue. A local user can create a symbolic link to a critical file on the system and overwrite it with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Deep Security: before 20.0.1-25770

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External links
https://success.trendmicro.com/en-US/solution/KA-0019344

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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