ICS Advisory: Schweitzer Engineering Laboratories SEL

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Summary:
A vulnerability has been identified in Schweitzer Engineering Laboratories' (SEL) products, specifically the SEL 700 series relays, affecting undisclosed features. The vulnerability, CVSS v4 5.9, allows an attacker to make modifications or cause a denial-of-service condition when logged on with a privileged access level. Affected products include various SEL relays, and mitigation involves updating to the latest versions. CISA recommends defensive measures such as minimizing network exposure, locating control systems behind firewalls, and using secure remote access methods. No known public exploitation has been reported to CISA at this time.