How severe is CVE-2025-67039?

CVE-2025-67039 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-67039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-67039?

CVE-2025-67039 primarily affects Lantronix Eds3016ps1ns Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-67039?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-67039 have an EU (EUVD) identifier?

Yes. CVE-2025-67039 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208589.

When was CVE-2025-67039 published?

CVE-2025-67039 was published on 2026-03-11 and last updated on 2026-09-04.

CVE-2025-67039

CVE-2025-67039 is a critical-severity vulnerability in Lantronix Eds3016ps1ns Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-208589
Weakness: CWE-288
Affected product: Lantronix Eds3016ps1ns Firmware
Published: 2026-03-11
Last modified: 2026-09-04

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.

Frequently asked questions

What is CVE-2025-67039?: 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.
How severe is CVE-2025-67039?: CVE-2025-67039 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-67039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-67039?: CVE-2025-67039 primarily affects Lantronix Eds3016ps1ns Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-67039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-67039 have an EU (EUVD) identifier?: Yes. CVE-2025-67039 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208589.
When was CVE-2025-67039 published?: CVE-2025-67039 was published on 2026-03-11 and last updated on 2026-09-04.

References

EU advisories (EUVD)

Affected products (2)

cpe:2.3:o:lantronix:eds3016ps1ns_firmware:3.1.0.0r2:*:*:*:*:*:*:*
cpe:2.3:o:lantronix:eds3008ps1ns_firmware:3.1.0.0r2:*:*:*:*:*:*:*

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