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Esr300 FirmwareOperating system · Engeniustech

CVE-2025-34035

CRITICAL · 9.8 CVSS v3.1 Published 2025-06-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An OS command injection vulnerability exists in EnGenius EnShare Cloud Service version 1.4.11 and earlier. The usbinteract.cgi script fails to properly sanitize user input passed to the path parameter, allowing unauthenticated remote attackers to inject arbitrary shell commands. The injected commands are executed with root privileges, leading to full system compromise. Exploitation evidence was observed by the Shadowserver Foundation on 2024-12-05 UTC.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

OS command injection vulnerability in EnGenius EnShare Cloud Service version 1.4.11 and earlier. The usbinteract.cgi script fails to sanitize user input in the path parameter, allowing unauthenticated remote attackers to inject arbitrary shell commands that execute with root privileges, leading to full system compromise.

MitigationUpgrade EnShare Cloud Service to a version newer than 1.4.11; if no patch is available, disable the usbinteract.cgi service or restrict network access to the management interface until a vendor fix is released.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Esr300 FirmwareOperating system
Affected:= 1.1.0.28= 1.3.1.42= 1.4.0= 1.4.1.28= 1.4.2= 1.4.7= 1.4.9
Esr350 FirmwareOperating system
Affected:= 1.1.0.29= 1.3.1.41= 1.4.0= 1.4.2= 1.4.5= 1.4.9= 1.4.11
Esr600 FirmwareOperating system
Affected:= 1.1.0.50= 1.2.1.46= 1.3.1.63= 1.4.0.23= 1.4.1= 1.4.2= 1.4.3= 1.4.5= 1.4.9= 1.4.11
Esr900 FirmwareOperating system
Affected:= 1.1.0= 1.2.2.23= 1.3.0= 1.3.1.26= 1.3.5.18= 1.4.0= 1.4.3= 1.4.5
Esr1200 FirmwareOperating system
Affected:= 1.1.0= 1.3.1.34= 1.4.1= 1.4.3= 1.4.5
Esr1750 FirmwareOperating system
Affected:= 1.1.0= 1.2.2.27= 1.3.0= 1.3.1.34= 1.4.0= 1.4.1= 1.4.3= 1.4.5
Epg5000 FirmwareOperating system
Affected:= 1.2.0= 1.3.0= 1.3.2= 1.3.3= 1.3.3.17= 1.3.7.20= 1.3.9.21

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify EnShare Cloud Service firmware version
    Access the device admin interface or check the firmware version through the device status page, typically found under System > Status or similar. The firmware version is usually displayed on the main dashboard or in a Firmware/Version information section.
    Affected if The firmware version is 1.4.11 or earlier, or matches any of the specific versions listed in the affected products list for your device model (Esr300, Esr350, Esr600, Esr900, Esr1200, Esr1750, or Epg5000).
  2. Confirm device model is vulnerable
    Identify the exact model number of the EnGenius device through the admin interface (typically under System > Status or Device Information). Match the model against the affected products list.
    Affected if The device is an Esr300, Esr350, Esr600, Esr900, Esr1200, Esr1750, or Epg5000 with a firmware version matching those listed in the affected versions.
  3. Check for usbinteract.cgi accessibility
    Attempt to access the CGI script via HTTP/HTTPS request to the EnShare web interface. The typical path would be something like http://[device-ip]/cgi-bin/usbinteract.cgi or similar paths under the EnShare service.
    Affected if The usbinteract.cgi script is accessible and responds to requests, indicating the EnShare web interface is active.
  4. Verify EnShare service is exposed to network
    Check if the EnShare management interface is reachable from untrusted networks. This can be done by attempting to access the device IP from an external network or reviewing firewall rules and port forwarding configurations.
    Affected if The EnShare service (typically ports 80 or 443, or custom ports configured for EnShare) is accessible from outside the local network without firewall restrictions.

A device is affected if it runs EnShare Cloud Service firmware version 1.4.11 or earlier on a vulnerable model (Esr300, Esr350, Esr600, Esr900, Esr1200, Esr1750, or Epg5000), with the usbinteract.cgi script accessible over the network.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade EnShare Cloud Service to a version newer than 1.4.11; if no patch is available, disable the usbinteract.cgi service or restrict network access to the management interface until a vendor fix is released.

Fix this in Esr300 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,150
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-34035 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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