CVE-2022-1039Network attack vector

Administrative takeover via weak default credentials

Published Apr 20, 2022 · Updated Apr 16, 2025

Weak password requirements in Red Lion FlexEdge DA50N all versions allow remote attackers to gain administrative device access. The web interface and Linux accounts accept weak default passwords through HTTP(S), SSH, or Telnet authentication without enforcing replacement. Successful web access permits other passwords to be changed, while a Linux-account login can use su with the associated password to obtain root access.

CVSS severity9.6
Critical
EPSS probability1.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak password requirements in Red Lion FlexEdge DA50N all versions allow remote attackers to gain administrative device access. The web interface and Linux accounts accept weak default passwords through HTTP(S), SSH, or Telnet authentication without enforcing replacement. Successful web access permits other passwords to be changed, while a Linux-account login can use su with the associated password to obtain root access.

The record

CVE
CVE-2022-1039
Published
Apr 20, 2022
Updated
Apr 16, 2025
Vendor
Red Lion Controls
Product
FlexEdge DA50N Secure Edge Networking Gateway
Classifications
CWE-521, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 20, 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

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Red Lion Controls · FlexEdge DA50N Secure Edge Networking Gatewayversion=All

Published CVSS scores

9.6ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV: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 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

CWE-521Weak Password Requirements
T1078.001Default 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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