CVE-2020-7484Network attack vector

Unauthenticated service interruption via legacy password feature

Published Apr 15, 2020 · Updated Aug 4, 2024

Denial of service in Schneider Electric TriStation 1131 4.0.0 through 4.9.0 and 4.10.0 allows remote attackers to interrupt service. The former password feature exposes the condition, but Schneider Electric has not published the operation that processes attacker-controlled traffic. Exploitation requires departure from documented dedicated-connection and key-switch protections, and the reported consequence is service interruption only.

CVSS severity7.5
High
EPSS probability1.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Schneider Electric TriStation 1131 4.0.0 through 4.9.0 and 4.10.0 allows remote attackers to interrupt service. The former password feature exposes the condition, but Schneider Electric has not published the operation that processes attacker-controlled traffic. Exploitation requires departure from documented dedicated-connection and key-switch protections, and the reported consequence is service interruption only.

The record

CVE
CVE-2020-7484
Published
Apr 15, 2020
Updated
Aug 4, 2024
Vendor
Schneider Electric
Product
TriStation 1131
Classifications
T0814
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=TriStation TS1131 (v4.0.0 to v4.9.0, v4.10.0)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Schneider Electric · TriStation 1131version=TriStation TS1131 (v4.0.0 to v4.9.0, v4.10.0)

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3NVDAV:N/AC:M/Au:N/C:N/I:N/A:P

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T0814Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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