CVE-2025-67039
Published: March 11, 2026· Updated: Mar 12, 2026
Official Description
An issue was discovered in Lantronix EDS3000PS 3.1.0.0R2. The authentication on management pages can be bypassed by appending a specific suffix to the URL and by sending an Authorization header that uses "admin" as the username.
Technical Analysis
CVE-2025-67039 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), with a CVSS base score of 9.1.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
News & Research Mentioning CVE-2025-67039
View CSAF Summary Successful exploitation of these vulnerabilities could allow an attacker to bypass authentication and execute code with root-level privileges. The following versions of Lantronix EDS3000PS and EDS5000 are affected: EDS3000PS 3.1.0.0R2 (CVE-2025-67039, CVE-2025-70082, CVE-2025-67041) EDS5000 2.1.0.0R3 (CVE-2025-67034, CVE-2025-67035, CVE-2025-67036, CVE-2025-67037, CVE-2025-67038) CVSS Vendor Equipment Vulnerabilities v3 9.8 Lantronix Lantronix EDS3000PS and EDS5000 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'), Authentication Bypass Using an Alternate Path or Channel, Unverified Password Change Background Critical Infrastructure Sectors: Communications, Information Technology, Critical Ma [xlite_meta score:79 src:CISA Alerts xlite_fp:48c3d1a77d264f00fbfe76e6a288caee084b0de228fa6f15ff08109a2dbdca16]
All References (3)
Quick Facts
Known Threat Actors
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2025-67039 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts