Actively exploited · Published Mar 11, 2026 · Assigned by mitre

CVE-2025-67038Lantronix EDS5000, G520, and X300 OS Command Injection

Critical 9.8 Exploited

In plain English

A critical-severity OS command injection in E210 series from Lantronix. Attackers are actively exploiting it in the wild (listed by CISA on June 23, 2026). The chance it is exploited in the next 30 days is estimated at 21.1% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)21.1%top 2.4% of all CVEs
Exploited in the wildYesCISA KEV since Jun 23, 2026
Attack tooling1Public PoC

CISA guidance

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Federal agencies must remediate by Jun 26, 2026.

Official description

An issue was discovered in Lantronix EDS5000 2.1.0.0R3. The HTTP RPC module executes a shell command to write logs when user's authentication fails. The username is directly concatenated with the command without any sanitization. This allow attackers to inject arbitrary OS commands into the username parameter. Injected commands are executed with root privileges.

Affected products (as reported)

VendorProductVersions
Lantronix EDS5000 series 0 – through 2.1.0.0R3
Lantronix G520 series 0 – before 2.6.0.4R6
Lantronix X300 series 0 – before 2.6.0.4R6
Lantronix E210 series 0 – before 3.21.0.0R1
Lantronix E220 series 0 – before 3.21.0.0R1

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References