CVE-2025-34239 Advantech WebAccess/VPN < 1.1.5 Command Injection in AppManagementController.appUpgradeAction()
An authenticated administrator can execute arbitrary commands as the web server user via a crafted filename in the app upgrade action.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34239?
CVE-2025-34239 is a high-severity command injection vulnerability in Advantech WebAccess/VPN, published on 6 Nov 2025. An attacker needs administrator access to exploit it, with no action from the victim.
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.
Weakness: CWE-78
Which versions are affected by CVE-2025-34239?
It affects 1 product.
Products include Advantech Webaccess\/Vpn.
How do I fix CVE-2025-34239?
No fix has been published for CVE-2025-34239 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-34239 being exploited?
There is no known exploitation of CVE-2025-34239 in the wild and no public exploit code.
Other vulnerabilities in Advantech WebAccess/VPN
- CVE-2025-34240 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AppManagementController.appUpgradeAction()
- CVE-2025-34242 Advantech WebAccess/VPN < 1.1.5 SQL Injection via AjaxNetworkController.ajaxAction()
- CVE-2025-34238 Path traversal in WebAccess/VPN
- CVE-2025-34237 Advantech WebAccess/VPN < 1.1.5 Stored XSS via StandaloneVpnClientsController.addStandaloneVpnClientAction()
- CVE-2025-34236 Advantech WebAccess/VPN < 1.1.5 Stored XSS via NetworksController.addNetworkAction()
Sources
Also known as GHSA-v7qq-g7hw-pj84.