Is CVE-2025-34239 actively exploited?

No active exploitation of CVE-2025-34239 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2025-34239 be exploited remotely?

Yes. CVE-2025-34239 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2025-34239?

CVE-2025-34239 has a CVSS score of 7.2 (HIGH).

HOME VULNERABILITIESCVE-2025-34239

HIGH

CVE-2025-34239

CWE-78Published: November 6, 2025· Updated: Jun 17, 2026

7.2

CVSS v3.1

Official Description

Advantech WebAccess/VPN versions prior to 1.1.5 contain a command injection vulnerability in AppManagementController.appUpgradeAction() that allows an authenticated system administrator to execute arbitrary commands as the web server user (www-data) by supplying a crafted uploaded filename.

NVD Source

Technical Analysis

CVE-2025-34239 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.2.