Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Schweitzer Engineering Laboratories | SEL-700BT Motor Bus Transfer Relay | R301-V0 – < R301-V6, R302-V0 – < R302-V1 | R301-V6 |
| Schweitzer Engineering Laboratories | SEL-700G Generator Protection Relay | R100-V0 – < R301-V6, R302-V0 – < R302-V1 | R301-V6 |
| SEL-710-5 Motor Protection Relay | SEL-710-5 Motor Protection Relay | R100-V0 – < R302-V1 | R302-V1 |
| Schweitzer Engineering Laboratories | SEL-751 Feeder Protection Relay | R101-V0 – < R302-V3, R400-V0 – < R400-V2 | R302-V3 |
| Schweitzer Engineering Laboratories | SEL-787-2/-3/-4 Transformer Protection Relay | R100-V0 – < R302-V1 | R302-V1 |
| Schweitzer Engineering Laboratories | SEL-787Z High-Impedance Differential Relay | R302-V0 – < R302-V3 | R302-V3 |
Advisories 1
- ICSA-24-095-02 Schweitzer Engineering Laboratories SEL 700 series relays CISA ICS & IT advisories · Apr 4, 2024