RCE in Gl.inet Be9300
CVE-2026-19982
A security vulnerability has been detected in GL.iNet BE9300 and MT6000 4.8.x. This vulnerability affects unknown code of the component Firewall-management RPC. The manipulation of the argument dest_port/dest_ip leads to os command injection. The attack may be initiated remotely. Upgrading to version 4.9.0 is able to resolve this issue. The affected component should be upgraded. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.018 (77.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.018 · change: +0.007
Affected products
- Gl.inet Be9300 — versions 4.8.*, 4.9.0
- Gl.inet Mt6000 — versions 4.8.*, 4.9.0
Weakness classification (CWE)
References
- vuldb.com/vuln/391164 (technical-description, vdb-entry)
- vuldb.com/vuln/391164/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-19982 (third-party-advisory)
- vuldb.com/submit/873918 (third-party-advisory)
- github.com/gl-inet/CVE-issues/blob/main/4.0.0/Firewall Cleanup RCE.md (related)
Frequently asked questions
- What is CVE-2026-19982?
- CVE-2026-19982 is a high-severity vulnerability in Gl.inet Be9300, classified under Command Injection. CVSS score: 7.4/10. Published 2026-08-17.
- How severe is CVE-2026-19982?
- High severity. CVSS v3 base score is 7.4 out of 10.