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Rg Ew1200r FirmwareOperating system · Ruijie

CVE-2023-34644

CRITICAL · 9.8 CVSS v3.1 Published 2023-07-31
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click Patch available

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
Remote code execution vulnerability in Ruijie Networks Product: RG-EW series home routers and repeaters EW_3.0(1)B11P204, RG-NBS and RG-S1930 series switches SWITCH_3.0(1)B11P218, RG-EG series business VPN routers EG_3.0(1)B11P216, EAP and RAP series wireless access points AP_3.0(1)B11P218, NBC series wireless controllers AC_3.0(1)B11P86 allows unauthorized remote attackers to gain the highest privileges via crafted POST request to /cgi-bin/luci/api/auth.

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
How this class of weakness works · CWE-94

The application evaluates attacker-influenced input as code, handing them a way to run logic inside the process. Depending on the runtime this can escalate directly to remote code execution. Remediation means removing dynamic evaluation of untrusted input and replacing it with safe, data-driven alternatives.

General guidance for the code injection class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Rg Ew1200r FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew300 FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew3200gx FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew1200g FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew1800gx FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew300r FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Ew1200 FirmwareOperating system
Affected:= 3.0\(1\)b11p204
Rg Eg3000xe FirmwareOperating system
Affected:= 3.0\(1\)b11p216

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

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
Patch available Apply the vendor patch
Vendor patch www.ruijie.com.cn →
Recommended fix High confidence

Firmware version newer than EW_3.0(1)B11P204, EG_3.0(1)B11P216, SWITCH_3.0(1)B11P218, AP_3.0(1)B11P218, AC_3.0(1)B11P86 - obtain exact version from vendor advisory

  1. 1. Identify the exact model of your Ruijie device from the affected list (EW series routers, EG series VPN routers, NBS/S1930 switches, EAP/RAP access points, NBC controllers).
  2. 2. Visit the vendor security advisory at https://www.ruijie.com.cn/gy/xw-aqtg-gw/91389/ to obtain the patched firmware version for your specific model.
  3. 3. Download the patched firmware from the official Ruijie Networks support portal (www.ruijienetworks.com).
  4. 4. Backup the current device configuration before applying the firmware update.
  5. 5. Upload and apply the new firmware through the device's web management interface or CLI, following the vendor's upgrade instructions.
  6. 6. After upgrading, verify the device is operational and confirm the firmware version matches the patched release.
  7. 7. If the device supports it, disable the /cgi-bin/luci/api/auth endpoint or implement additional access controls if immediate upgrading is not feasible.
Caveat Review vendor release notes for any configuration changes required after upgrade; test in non-production environment first

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

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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-2023-34644 in production — separate from our analysis above.

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