CVE-2024-2103Network attack vector

Relay disruption via undocumented privileged functionality

Published Apr 4, 2024 · Updated Aug 1, 2024

Undocumented functionality in six SEL protection relay families allows remote authenticated users with privileged access to alter or interrupt relay behavior. SEL has not publicly described the hidden functions or the operations they perform after a privileged login. Successful use can compromise relay integrity or availability, causing unpredictable protection and control behavior in electric-power equipment.

CVSS severity6.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Undocumented functionality in six SEL protection relay families allows remote authenticated users with privileged access to alter or interrupt relay behavior. SEL has not publicly described the hidden functions or the operations they perform after a privileged login. Successful use can compromise relay integrity or availability, causing unpredictable protection and control behavior in electric-power equipment.

The record

CVE
CVE-2024-2103
Published
Apr 4, 2024
Updated
Aug 1, 2024
Vendor
Schweitzer Engineering Laboratories
Product
SEL-710-5 Motor Protection Relay
Classifications
CWE-1242
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=R100-V0 <R302-V1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Schweitzer Engineering Laboratories · SEL-710-5 Motor Protection Relayversion=R100-V0 <R302-V1
Schweitzer Engineering Laboratories · SEL-787-2/-3/-4 Transformer Protection Relayversion=R100-V0 <R302-V1
Schweitzer Engineering Laboratories · SEL-700G Generator Protection Relayversion=R100-V0 <R301-V6; version=R302-V0 <R302-V1
Schweitzer Engineering Laboratories · SEL-751 Feeder Protection Relayversion=R101-V0 <R302-V3; version=R400-V0 <R400-V2
Schweitzer Engineering Laboratories · SEL-787Z High-Impedance Differential Relayversion=R302-V0 <R302-V3
Schweitzer Engineering Laboratories · SEL-700BT Motor Bus Transfer Relayversion=R301-V0 <R301-V6; version=R302-V0 <R302-V1

Published CVSS scores

6.5Schweitzer Engineering Laboratories, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1242Inclusion of Undocumented Features or Chicken Bits

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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