CVE-2026-18787: Command Injection in GL.iNet AX1800
A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngx/oui-rpc.lua of the component RPC Endpoint. The manipulation of the argument args.id leads to command injection. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
AI Analysis
Technical Summary
This vulnerability involves command injection through the remove_rule function in the RPC Endpoint of GL.iNet AX1800 routers up to version 4.8.3. By manipulating the args.id parameter, an attacker can remotely execute arbitrary commands on the device. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity with network attack vector, low attack complexity, and no user interaction required. Public exploit code exists, increasing the risk of exploitation. The vendor has been contacted, but no official fix or mitigation details are currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on affected GL.iNet AX1800 devices, potentially leading to full system compromise. This can impact device integrity, confidentiality, and availability. The high CVSS score reflects the critical nature of this vulnerability due to its remote exploitability and high impact on the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the device's RPC Endpoint and monitor for suspicious activity. Follow vendor communications for updates on patches or mitigations.
CVE-2026-18787: Command Injection in GL.iNet AX1800
Description
A vulnerability was identified in GL.iNet AX1800 up to 4.8.3. The affected element is the function remove_rule of the file /usr/share/gl-ngx/oui-rpc.lua of the component RPC Endpoint. The manipulation of the argument args.id leads to command injection. The attack is possible to be carried out remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.
CVSS v4.0
Score 8.7high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves command injection through the remove_rule function in the RPC Endpoint of GL.iNet AX1800 routers up to version 4.8.3. By manipulating the args.id parameter, an attacker can remotely execute arbitrary commands on the device. The vulnerability has a CVSS 4.0 base score of 8.7, indicating high severity with network attack vector, low attack complexity, and no user interaction required. Public exploit code exists, increasing the risk of exploitation. The vendor has been contacted, but no official fix or mitigation details are currently available.
Potential Impact
Successful exploitation allows remote attackers to execute arbitrary commands on affected GL.iNet AX1800 devices, potentially leading to full system compromise. This can impact device integrity, confidentiality, and availability. The high CVSS score reflects the critical nature of this vulnerability due to its remote exploitability and high impact on the device.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict network access to the device's RPC Endpoint and monitor for suspicious activity. Follow vendor communications for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-04T08:33:00.136Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a721d52bf8831d53928c5ea
Added to database: 08/04/2026, 17:11:46 UTC
Last enriched: 08/04/2026, 17:26:53 UTC
Last updated: 08/04/2026, 17:57:19 UTC
Views: 3
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