CVE-2025-8259
BaseFortify
Publication date: 2025-07-28
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| vaelsys | vaelsys | 4.1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-77 | The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. |
| CWE-78 | The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2025-8259 is a critical remote OS command injection vulnerability in Vaelsys version 4.1.0. It occurs in the execute_DataObjectProc function of the /grid/vgrid_server.php file due to improper input validation of the argument xajaxargs. This allows an attacker to inject and execute arbitrary operating system commands remotely without authentication, requiring only a valid PHP session ID. The flaw arises because the application constructs OS commands using unfiltered user input, leading to command injection. [1, 2]
How can this vulnerability impact me? :
This vulnerability can severely impact the confidentiality, integrity, and availability of the affected system. An attacker can remotely execute arbitrary OS commands, potentially taking full control of the system, accessing sensitive data, modifying or deleting information, and disrupting services. Since exploitation requires no authentication beyond a valid PHP session ID, it poses a significant security risk. [2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by identifying the presence of the vulnerable endpoint /grid/vgrid_server.php on Vaelsys version 4.1.0. One method is to use Google dorking with the query inurl:grid/vgrid_server.php to find exposed instances. Additionally, checking for the execution of the execute_DataObjectProc function with the xajaxargs parameter may indicate exploitation attempts. Since exploitation requires a valid PHP session ID (PHPSESSID), monitoring HTTP requests for suspicious command injection patterns in the xajaxargs parameter within requests to /grid/vgrid_server.php can help detect attacks. Specific commands to detect the vulnerable endpoint or attempts include: 1) Using curl or wget to send crafted requests to /grid/vgrid_server.php with various xajaxargs payloads to test for command injection responses. 2) Using network monitoring tools or intrusion detection systems to look for unusual commands or payloads targeting this endpoint. Example command to check endpoint presence: curl -I http://target/grid/vgrid_server.php Example command to test injection (use carefully in a controlled environment): curl -b PHPSESSID=<valid_session_id> -d 'xajaxargs=;id' http://target/grid/vgrid_server.php [2, 1]
What immediate steps should I take to mitigate this vulnerability?
No known mitigations or countermeasures have been published for this vulnerability. The suggested immediate step is to replace the affected Vaelsys 4.1.0 component with an alternative product or a patched version once available. Additionally, restricting access to the vulnerable endpoint /grid/vgrid_server.php, implementing network-level protections such as web application firewalls (WAF) to block suspicious inputs targeting the xajaxargs parameter, and monitoring for exploitation attempts are recommended interim measures. [2]