Siemens SiPass integrated AC5102/SiPass integrated ACC-AP up to 6.4.8 Telnet Command Line Interface Parser command injection

Summaryinfo

A vulnerability classified as critical was found in Siemens SiPass integrated AC5102 and SiPass integrated ACC-AP up to 6.4.8. This impacts an unknown function of the component Telnet Command Line Interface Parser. Such manipulation leads to command injection. This vulnerability is traded as CVE-2025-27493. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Siemens SiPass integrated AC5102 and SiPass integrated ACC-AP up to 6.4.8 and classified as critical. Affected by this issue is an unknown function of the component Telnet Command Line Interface Parser. The manipulation with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in SiPass integrated AC5102 (ACC-G2) (All versions < V6.4.9), SiPass integrated ACC-AP (All versions < V6.4.9). Affected devices improperly sanitize user input for specific commands on the telnet command line interface. This could allow an authenticated local administrator to escalate privileges by injecting arbitrary commands that are executed with root privileges.

The advisory is shared for download at cert-portal.siemens.com. This vulnerability is handled as CVE-2025-27493 since 02/26/2025. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/23/2025). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 6.4.9 eliminates this vulnerability.

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Productinfo

Vendor

• Siemens

Name

• SiPass integrated AC5102
• SiPass integrated ACC-AP

Version

• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8

License

• commercial

Website

• Vendor: https://www.siemens.com/

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