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Rax30 FirmwareOperating system · Netgear

CVE-2023-27367

HIGH · 8.0 CVSS v3.1 Published 2024-05-03
Fix available
A fix is available. Upgrade to 1.0.10.94 or later.
See remediation →
82/100
Remediation priority · High
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
NETGEAR RAX30 libcms_cli Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR RAX30 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the libcms_cli module. The issue results from the lack of proper validation of a user-supplied command before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-19838.

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

Command injection vulnerability in the libcms_cli module of NETGEAR RAX30 routers allows authenticated network-adjacent attackers to execute arbitrary commands with root privileges due to insufficient validation of user-supplied input before passing it to system calls. The authentication requirement can be bypassed, lowering the exploitation barrier.

MitigationApply NETGEAR firmware updates when available; meanwhile, restrict access to the router's management interface to trusted internal networks only and disable remote management features.

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
Rax30 FirmwareOperating system
Affected:< 1.0.10.94

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
Adjacent
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:A/AC:L/PR:L/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 the router model
    Locate the model number on the router device or in the management interface under 'Router Info' or 'Status' page
    Affected if Device is not a Netgear RAX30 model
  2. Check the installed firmware version
    Access the router web interface, navigate to the firmware or status section, and record the firmware version displayed
    Affected if Firmware version is earlier than 1.0.10.94 (e.g., 1.0.10.92, 1.0.9.6, etc.)
  3. Determine if remote management is enabled
    In the router web interface, go to 'Advanced' settings and check 'Remote Management' or 'Web Management Access' settings
    Affected if Remote management is enabled and allows access from external IP addresses
  4. Assess network exposure of the management interface
    Check if the router admin interface (typically ports 80/443) is accessible from untrusted networks or the internet by attempting access from an external location or reviewing firewall rules
    Affected if Management interface is accessible from the internet or untrusted external networks

The device is affected if it is a Netgear RAX30 router running firmware version earlier than 1.0.10.94, especially if remote management is enabled or the admin interface is exposed to untrusted networks.

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.

dbcve · scoped
Upgrade available Upgrade to 1.0.10.94 or later
Fixed in 1.0.10.94
Interim mitigation

Apply NETGEAR firmware updates when available; meanwhile, restrict access to the router's management interface to trusted internal networks only and disable remote management features.

Recommended fix High confidence

Rax30 Firmware version 1.0.10.94 or later

  1. Navigate to the official NETGEAR support page at kb.netgear.com and search for RAX30 router firmware downloads
  2. Download firmware version 1.0.10.94 or later (the fixed release)
  3. Log in to the RAX30 router web management interface
  4. Navigate to the Administration or Firmware Update section
  5. Upload the downloaded firmware file and apply the update
  6. Wait for the router to reboot and verify the firmware version shows 1.0.10.94 or later
Caveat Firmware updates may reset router configuration to defaults; backup current settings before upgrading if needed

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Rax30 Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation3.0 h
  • Testing4.0 h
  • Review / QA2.0 h
13.0 hours of engineering $2,300
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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-2023-27367 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data