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Siemens SIPROTEC 5 Using DIGSI5 Protocol

medcisa_icsPublished 2026-06-23

<p><a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-174-02.json"><strong>View CSAF</strong></a></p> <h2>Summary</h2> <p><strong>SIPROTEC 5 is vulnerable to arbitrary file uploads by authenticated users using the DIGSI 5 protocol. This could allow an attacker to upload malicious configuration files, potentially causing a permanent denial of service condition. A

MITRE ATT&CK techniques

Indicators of compromise

Original source: https://www.cisa.gov/news-events/ics-advisories/icsa-26-174-02