CVE-2026-46746: OS Command Injection
A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 6). The application does not properly sanitize user input in the /api/sftp/uploadFiles endpoint, allowing the injection of shell command payloads via crafted directory names. These payloads are stored and executed when directory listings are retrieved. This could allow an authenticated remote attacker to execute arbitrary commands on the underlying operating system with the privileges of the affected service user (sinecins).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
SINEC INSto a version that resolves this vulnerability.Fixed in V1.0 SP2 Update 6 - Configuration
If the /api/sftp/uploadFiles endpoint is not required, disable it. Otherwise restrict its functionality to only trusted users/accounts and validate/sanitize directory name inputs before accepting uploads.
SINEC INS /api/sftp/uploadFiles endpoint = disabled or access-restricted - Compensating control
Restrict access to the /api/sftp/uploadFiles endpoint using network controls (firewall, WAF, or ACL) to trusted IP ranges and required management hosts; limit exposure to reduce ability of remote authenticated attackers to reach the endpoint.
- Operational
Rotate credentials for the service account 'sinecins' and any user accounts that could have been used to access the endpoint; review access logs for signs of exploitation and remediate any indicators of compromise.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-46746?
The severity of CVE-2026-46746 is high with a score of 8.8.
How do I fix CVE-2026-46746?
To fix CVE-2026-46746, update SINEC INS to version 1.0 SP2 Update 6 or later.
What type of vulnerability is CVE-2026-46746?
CVE-2026-46746 is an OS Command Injection vulnerability.
Which software is affected by CVE-2026-46746?
CVE-2026-46746 affects all versions of Siemens SINEC INS prior to V1.0 SP2 Update 6.
What exploitation risks are associated with CVE-2026-46746?
Exploitation of CVE-2026-46746 can result in remote execution of shell command payloads.