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The vulnerability, identified as CVE-2026-25573, resides in the SICAM SIAPP SDK from Siemens. The core issue is that the application constructs operating system shell commands by concatenating strings provided by the caller without proper sanitization. When the SDK executes these dynamically built commands, an attacker can inject arbitrary commands by inserting shell metacharacters (like ;, &&, ||, or backticks) into the input. This allows the attacker to break out of the intended command and execute their own malicious code on the underlying system. Successful exploitation leverages the privileges of the vulnerable application, which often runs with high-level system access, leading to a complete compromise of the device’s confidentiality, integrity, and availability. The attack can be launched remotely over the network with low complexity and does not require any user interaction or prior authentication .
dailycve form:
Platform: SICAM SIAPP SDK
Version: All < V2.1.7
Vulnerability : Command Injection
Severity: High (CVSS 7.4)
date: 2026-03-10
Prediction: Patched in V2.1.7
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Analytics
The vulnerability stems from CWE-73: External Control of File Name or Path, leading to command injection . Its CVSS v3.1 vector is AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H, indicating a local attack vector with high complexity, but requiring no privileges or user interaction to achieve a high impact . The CVSS v4.0 score is 8.6, reflecting its critical nature in industrial control systems . Given that it is part of a Siemens SDK, it affects a wide range of dependent products and systems .
Exploit:
A basic exploit payload aims to terminate the intended command and execute a new one. For example, if the application is designed to execute ping -c 4
</code>: [bash] Vulnerable code snippet (Conceptual C) char command[bash]; snprintf(command, sizeof(command), "ping -c 4 %s", user_input); system(command);
Attacker input to spawn a shell ; /bin/sh
Resulting malicious command executed by the system ping -c 4 ; /bin/sh
Another example to add a backdoor user ; useradd -p $(openssl passwd -1 attacker) attacker; echo "Injected"
Protection from this CVE
The primary mitigation is to update the SICAM SIAPP SDK to version 2.1.7 or later . As a secure coding practice, developers should avoid using `system()` or similar shell-executing functions with unsanitized user input. If shell execution is unavoidable, rigorous input validation and whitelisting of allowed characters must be implemented. Instead, use safer alternatives like `execve()` which do not invoke a shell and allow for direct passing of arguments as an array, preventing injection.
Example of safer execution (Conceptual C)
char args[] = {"/bin/ping", "-c", "4", user_input, NULL};
execve("/bin/ping", args, NULL);
Impact
Successful exploitation of CVE-2026-25573 leads to full system compromise . An attacker can gain complete control over the affected Siemens device, potentially disrupting grid automation and energy management operations . This can result in denial of service, unauthorized data access, and the ability to use the compromised system as a foothold for further attacks within the industrial network.
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Sources:
Reported By: nvd.nist.gov
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