CVE-2023-38579Network attack vector

Unintended device actions via predictable CSRF token

Published Feb 6, 2024 · Updated Nov 7, 2024

Cross-site request forgery in Westermo Lynx L206-F2G1 with WeOS 4.24 allows remote authenticated users to induce unintended actions. The web interface accepts a request token that is predictable or easily guessed, allowing a crafted cross-origin request to pass its CSRF check. Exploitation requires a logged-in victim to trigger the malicious request; successful abuse performs actions with that victim's device privileges.

CVSS severity8.0
High
EPSS probability0.23%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Westermo Lynx L206-F2G1 with WeOS 4.24 allows remote authenticated users to induce unintended actions. The web interface accepts a request token that is predictable or easily guessed, allowing a crafted cross-origin request to pass its CSRF check. Exploitation requires a logged-in victim to trigger the malicious request; successful abuse performs actions with that victim's device privileges.

The record

CVE
CVE-2023-38579
Published
Feb 6, 2024
Updated
Nov 7, 2024
Vendor
Westermo
Product
Lynx
Classifications
CWE-352, T1204
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 7, 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=4.24
  2. Affected versionversion=L206-F2G1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Westermo · Lynxversion=4.24; version=L206-F2G1

Published CVSS scores

8.0ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1204User Execution

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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