All versions of Econolite EOS traffic control software are vulnerable to CWE-328: Use of Weak Hash, and use a weak hash algorithm for encrypting privileged user credentials. A configuration file that is accessible without authentication uses MD5 hashes for encrypting credentials, including those of administrators and technicians.

References

• https://nvd.nist.gov/vuln/detail/CVE-2023-0452
• https://www.cisa.gov/uscert/ics/advisories/icsa-23-026-02