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GL.iNet Routers CVE-2026-19982

| EUVDEUVD-2026-60042 MEDIUM
OS Command Injection (CWE-78)
2026-08-17 VulDB GHSA-3gr2-27fr-g5v9
5.3
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) PRIMARY
5.3 MEDIUM
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
8.8 HIGH

OS command injection grants full shell access (C:H/I:H/A:H); PR:L required per CVSS 4.0 input; scope unchanged as impact is contained to the router device itself.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L

Primary rating from Vendor (VulDB).

CVSS VectorVendor: VulDB

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

1
Analysis Generated
Aug 17, 2026 - 05:00 vuln.today

DescriptionCVE.org

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."

AnalysisAI

OS command injection in GL.iNet BE9300 and MT6000 router firmware 4.8.x allows remote low-privileged attackers to execute arbitrary operating system commands via unsanitized dest_port and dest_ip arguments in the Firewall-management RPC component. The vendor has confirmed the vulnerability through their CVE issues GitHub repository and released a fix in firmware version 4.9.0. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Exploit
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Execution
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Persist
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid low-privileged authenticated session on the GL.iNet router management interface, as indicated by PR:L in the CVSS 4.0 vector. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The vendor-assigned CVSS 4.0 score of 5.3 reflects a network-reachable attack requiring low privileges (PR:L) with low impact across all dimensions (VC:L/VI:L/VA:L/SC:L/SI:L/SA:L), which appears conservative for an OS command injection primitive - full shell access on a router typically implies complete device compromise and the ability to intercept or redirect all traffic. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation Upgrade GL.iNet BE9300 and MT6000 firmware to version 4.9.0, which the vendor confirms resolves this vulnerability per https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Firewall%20Cleanup%20RCE.md. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-19982 vulnerability details – vuln.today

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