CVE-2026-18602

CRITICAL

GL.iNet GL-MT3000 ovpn-client.so Native Plugin glc ovpn-client.get_recommend_config command injection

Title source: CVE List
STIX 2.1 vulnerability

Record summary

CVE-2026-18602 has a selected CVSS score of 9.3 (critical).

Description

A vulnerability was determined in GL.iNet GL-MT3000 up to 4.4.5. Affected is the function ovpn-client.get_recommend_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Executing a manipulation of the argument Hostname can lead to command injection. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Description source: CVE List

Exploitation context

CISA SSVC decision

ExploitationPoC
AutomatableYes
Technical impactTotal

CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 3, 2026 · Source: CVE List

Affected products and versions

1
ProductSourceVersion range

GL-MT3000

Browse GL.iNet / GL-MT3000
CVE List4.4.0affected
4.4.1affected
4.4.2affected
4.4.3affected
4.4.4affected
4.4.5affected

Research & analysis

1
Advisory analysisItalian National Cybersecurity Agency (ACN/CSIRT Italia)Source: EIP research review

GL-iNet: PoC pubblici per lo sfruttamento delle CVE-2026-18601, CVE-2026-18602, CVE-2026-18612, CVE-2026-18616 - ACN

Italian CSIRT (ACN) advisory AL04/260804/CSIRT-ITA confirms public Proof of Concept availability for four unauthenticated command injection vulnerabilities in GL.iNet GL-MT3000 (Beryl AX) routers running firmware up to 4.4.5. All four CVEs carry CVSS 9.8 and allow remote code execution as root via the /cgi-bin/glc RPC endpoint without authentication. CVE-2026-18601: ovpn-client.check_config, unsanitized filename parameter injected into tar command via single-quote escape. CVE-2026-18602: ovpn-client.get_recommend_config, unsanitized hostname parameter passed to sprintf/system(). CVE-2026-18612: plugins.install_package/remove_package, unsanitized package name with only prefix-based blacklist bypass. CVE-2026-18616: wg-server.set_peer, unsanitized public_key parameter passed to sprintf/system(). The ACN advisory recommends applying vendor patches; corroborating sources note no fixed firmware version is confirmed. Unauthenticated access is confirmed by IONIX technical analysis; the ACN advisory describes remote attack without explicitly stating the authentication requirement.

Root causeTechnical detailPoC researchMitigation
https://www.acn.gov.it/portale/en/w/gl-inet-poc-pubblici-per-lo-sfruttamento-delle-cve-2026-18601-cve-2026-18602-cve-2026-18612-cve-2026-18616
Research notes
Supporting sources
ReferenceCVE-2026-18601 – Unauthenticated Remote Code Execution (Command Injection) – GL.iNet GL-MT3000
ReferenceCVE-2026-18602 – Unauthenticated Command Injection (RCE) – GL.iNet GL-MT3000
ReferenceCVE-2026-18612 – Unauthenticated Command Injection (RCE) – GL.iNet GL-MT3000
ReferenceCVE-2026-18616 – Unauthenticated Command Injection (RCE) – GL.iNet GL-MT3000

References

6
VDB-385517 | GL.iNet GL-MT3000 ovpn-client.so Native Plugin glc ovpn-client.get_recommend_config command injectionvdb entryTechnical description
https://vuldb.com/vuln/385517