CVE-2024-2103: Schweitzer Engineering Laboratories Sel-700bt Motor Bus Transfer Relay

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Inclusion of undocumented features vulnerability accessible when logged on with a privileged access level on the following Schweitzer Engineering Laboratories relays could allow the relay to behave unpredictably: SEL-700BT Motor Bus Transfer Relay, SEL-700G Generator Protection Relay, SEL-710-5 Motor Protection Relay, SEL-751 Feeder Protection Relay, SEL-787-2/-3/-4 Transformer Protection Relay, SEL-787Z High-Impedance Differential Relay . See product instruction manual appendix A dated 20240308 for more details regarding the SEL-751 Feeder Protection Relay. For more information for the other affected products, see their instruction manuals dated 20240329.

Affected products

• Schweitzer Engineering Laboratories Sel-700bt Motor Bus Transfer Relay: from R301-V0, before R301-V6 (fixed in R301-V6); from R302-V0, before R302-V1 (fixed in R302-V1)
• Schweitzer Engineering Laboratories Sel-700g Generator Protection Relay: from R100-V0, before R301-V6 (fixed in R301-V6); from R302-V0, before R302-V1 (fixed in R302-V1)
• Schweitzer Engineering Laboratories Sel-751 Feeder Protection Relay: from R101-V0, before R302-V3 (fixed in R302-V3); from R400-V0, before R400-V2 (fixed in R400-V2)
• Schweitzer Engineering Laboratories Sel-787-2/-3/-4 Transformer Protection Relay: from R100-V0, before R302-V1 (fixed in R302-V1)
• Schweitzer Engineering Laboratories Sel-787z High-Impedance Differential Relay: from R302-V0, before R302-V3 (fixed in R302-V3)
• Sel-710-5 Motor Protection Relay Sel-710-5 Motor Protection Relay: from R100-V0, before R302-V1 (fixed in R302-V1)

Published 2024-04-04. Last modified 2026-06-17.