CVE-2022-1668Network attack vector

Unauthenticated root access via default SSH credentials

Published Jun 24, 2022 · Updated Apr 16, 2025

Weak default credentials in Sécheron SEPCOS firmware allow remote attackers to gain root access through the device's open SSH port. The SSH service accepts factory-set credentials for the root account rather than requiring deployment-specific credentials. No prior authentication is required; successful login grants OS superuser privileges in the 1.23 branch before 1.23.21, the 1.24 branch before 1.24.8, and the 1.25 branch before 1.25.3.

CVSS severity9.8
Critical
EPSS probability2.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak default credentials in Sécheron SEPCOS firmware allow remote attackers to gain root access through the device's open SSH port. The SSH service accepts factory-set credentials for the root account rather than requiring deployment-specific credentials. No prior authentication is required; successful login grants OS superuser privileges in the 1.23 branch before 1.23.21, the 1.24 branch before 1.24.8, and the 1.25 branch before 1.25.3.

The record

CVE
CVE-2022-1668
Published
Jun 24, 2022
Updated
Apr 16, 2025
Vendor
Sécheron
Product
SEPCOS Control and Protection Relay Firmware
Classifications
CWE-521, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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=All versions <1.23.21 changes=[{"at":"1.24.8","status":"unaffected"},{"at":"1.25.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sécheron · SEPCOS Control and Protection Relay Firmwareversion=All versions <1.23.21 changes=[{"at":"1.24.8","status":"unaffected"},{"at":"1.25.3","status":"unaffected"}]

Published CVSS scores

9.8ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-521Weak Password Requirements
T1078.001Valid Accounts: Default Accounts

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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