Vulnerability · Published Aug 4, 2026 · Assigned by VulDB

CVE-2026-18787GL.iNet AX1800 RPC Endpoint oui-rpc.lua remove_rule command injection

High 8.8

In plain English

A high-severity command injection in AX1800 from GL.iNet. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.2% (higher than 88% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)3.2%top 11.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
GL.iNet	AX1800	4.8.04.8.14.8.24.8.3

Weakness: CWE-77, CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R

References

VDB-385788 | GL.iNet AX1800 RPC Endpoint oui-rpc.lua remove_rule command injection vdb-entry, technical-description
VDB-385788 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-18787 | CVE Analysis and Report third-party-advisory
Submit #857346 | GL.iNet AX1800 4.8.3 Command Injection third-party-advisory
https://github.com/xxianxiayubanmian/iot/blob/main/GL-link%20AX1800.md exploit