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.
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)
| Vendor | Product | Versions |
|---|---|---|
| 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
- https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/?_gl=16c8bez_upMQ.._gaMzQwNjk5ODI5LjE3ODI5MTM3NTk._ga_M2G6RLT5L3*czE3ODI5MTM3NTgkbzEkZzAkdDE3ODI5MTM3NTgkajYwJGwwJGgw
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-069-02
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-069-02.json
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-67038 government-resource