CyberSecBulletin
CVE-2025-67038Exploited in the wildNVD status: Analyzed

Lantronix EDS5000 Code Injection

Published Updated By the CyberSecBulletin desk

CVE-2025-67038 is a critical-severity improper neutralization of special elements used in an OS command vulnerability in EDS5000 series from Lantronix, with a CVSS 3.1 base score of 9.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected EDS5000 series versions: 2.1.0.0R3 and earlier. The record does not name a fixed version, so check the vendor advisory. CISA added it to the Known Exploited Vulnerabilities catalogue on June 23, 2026, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Update G520 series to 2.6.0.4R6 or a later version.
  2. Update X300 series to 2.6.0.4R6 or a later version.
  3. Update E210 series to 3.21.0.0R1 or a later version.
  4. CISA's required action: 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.
  5. Read the advisory on lantronix.com for workarounds and exact fixed builds.
  6. Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.

Affected products and versions

VendorProductAffected versionsFixed in
LantronixEDS5000 series2.1.0.0R3 and earlierNot stated
LantronixG520 seriesbefore 2.6.0.4R62.6.0.4R6
LantronixX300 seriesbefore 2.6.0.4R62.6.0.4R6
LantronixE210 seriesbefore 3.21.0.0R13.21.0.0R1
LantronixE220 seriesbefore 3.21.0.0R13.21.0.0R1
LantronixEds5008 Firmwarebefore 2.2.0.0r12.2.0.0r1
LantronixEds5016 Firmwarebefore 2.2.0.0r12.2.0.0r1
LantronixEds5032 Firmwarebefore 2.2.0.0r12.2.0.0r1
LantronixG526gp12s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG526gp17s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG526gp1cs Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG526gp1asg Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG526gp1as Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG527gp22s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG527gp27s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG527gp2as Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG527gp2asg Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG528gp2fs Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG528gp2fsg Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixG528gp2fsgc Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixX300f202s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixX303f202s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixX304g00as Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixX304g000s Firmwarebefore 2.6.0.4R62.6.0.4R6
LantronixX304g002s Firmwarebefore 2.6.0.4R62.6.0.4R6

Version data comes from the organisation that assigned the CVE; 13 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
NoneNo account or login is needed.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (hq.dhs.gov).

Scoring systemScoreSeverityScored by
CVSS 4.09.3CriticalCNA (hq.dhs.gov)
CVSS 3.19.8CriticalCNA (hq.dhs.gov)

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.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Improper Neutralization of Special Elements used in an OS Command

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command before it is sent to a downstream component.

How developers prevent this class of flaw

  • If at all possible, use library calls rather than external processes to recreate the desired functionality.
  • For any data that will be used to generate a command to be executed, keep as much of that data out of external control as possible. For example, in web applications, this may require storing the data locally in the session's state instead of sending it out to the client in a hidden form field.
  • For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.

More Improper Neutralization of Special Elements used in an OS Command vulnerabilities (CWE-78)

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. CISA published its SSVC assessment (exploitation: active, automatable: yes, technical impact: total).
  4. Deadline for US federal agencies to remediate, set by CISA.
  5. Record last changed materially (score, affected products, status or references).

References

Other vulnerabilities in EDS5000 series

All EDS5000 series vulnerabilities

Recent Improper Neutralization of Special Elements used in an OS Command vulnerabilities

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