Actively Exploited, CISA KEV

CVE-2025-67038: Lantronix EDS5000 Critical Vulnerability

Severity: Critical | CVSS 3.1: 9.8 | Published: 2026-03-11 | KEV Added: 2026-06-23

What is CVE-2025-67038?

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 authantication 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.

Technical Analysis

Weakness Classification

This vulnerability is classified as CWE-94, Code Injection. The application allows user input to be interpreted as code, giving an attacker the ability to execute arbitrary code within the application context.

Attack Vector Breakdown

  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality: High
  • Integrity: High
  • Availability: High

Impact Analysis

This vulnerability is exploitable over the network, meaning any system reachable via the internet or internal network is potentially at risk without physical access. The attack complexity is low, requires no special privileges, and needs no user interaction, making it straightforward to exploit at scale. Successful exploitation can result in full confidentiality breach (complete data disclosure), complete integrity compromise (data modification or code execution), total availability loss (denial of service). The application allows user input to be interpreted as code, giving an attacker the ability to execute arbitrary code within the application context.

Exploitation Probability (EPSS): 14.3% chance of exploitation in the next 30 days (96th percentile). This is a significantly elevated exploitation probability, prioritize patching.

Is CVE-2025-67038 being exploited?

Yes. CVE-2025-67038 is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, restricted to CVEs with confirmed active exploitation in the wild. CISA added this vulnerability on 2026-06-23. Inclusion in KEV triggers the patching mandate under BOD 22-01 for U.S. federal civilian agencies, with a remediation deadline of 2026-06-26.

How to fix CVE-2025-67038

Apply the security update issued by Lantronix for EDS5000. If an immediate patch is not possible, consult the vendor advisory for mitigation guidance, restrict network exposure of the affected service, and monitor logs for indicators of exploitation. CISA's Known Exploited Vulnerabilities catalog requires U.S. federal agencies to remediate this vulnerability by the due date shown below under Binding Operational Directive 22-01. Private organizations should treat KEV entries as priority-one patches because active exploitation has been confirmed in the wild.

Related Vulnerabilities

Other actively exploited vulnerabilities sharing the same weakness pattern (CWE-94, Code Injection):

  • CVE-2026-15410 (High 7.2) [same CWE], Post-authentication improper control of generation of code ('Code Injection')…
  • CVE-2008-4250 (Critical 9.8) [same CWE], The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003…
  • CVE-2009-0238 (High 8.8) [same CWE], Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel…
  • CVE-2026-1340 (Critical 9.8) [same CWE], A code injection in Ivanti Endpoint Manager Mobile allowing attackers to…
  • CVE-2026-33017 (Critical 9.8) [same CWE], Langflow is a tool for building and deploying AI-powered agents and workflows…

Frequently asked questions

Is CVE-2025-67038 critical?

CVE-2025-67038 has a CVSS 3.1 base score of 9.8, Critical severity. It should be treated as a priority patch, especially given the active exploitation confirmed by CISA.

Is CVE-2025-67038 being actively exploited?

Yes, CISA added CVE-2025-67038 to the Known Exploited Vulnerabilities catalog on 2026-06-23. Inclusion in KEV means CISA has confirmed in-the-wild exploitation.

How do I patch CVE-2025-67038?

Apply the security update from Lantronix for EDS5000. Federal agencies must remediate by 2026-06-26 under BOD 22-01.

What type of vulnerability is CVE-2025-67038?

CVE-2025-67038 is classified under CWE-94 (Code Injection). The application allows user input to be interpreted as code, giving an attacker the ability to execute arbitrary code within the application context.

What is the CVSS score for CVE-2025-67038?

CVE-2025-67038 has a CVSS 3.1 base score of 9.8, classifying it as Critical severity. The attack vector is Network, attack complexity is Low, and no privileges are required.