CVE-2026-32291

Received Received - Intake

Unauthorized UART Access in GL-iNet Comet KVM Console

Publication date: 2026-03-17

Last updated on: 2026-04-27

Assigner: Cybersecurity and Infrastructure Security Agency (CISA) U.S. Civilian Government

Description

The GL-iNet Comet (GL-RM1) KVM before 1.8.2 does not require authentication on the UART serial console. This attack requires physically opening the device and connecting to the UART pins.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-03-17

Last Modified

2026-04-27

Generated

2026-07-06

AI Q&A

2026-03-17

EPSS Evaluated

2026-07-05

NVD

CVE-2026-32291

EUVD

EUVD-2026-12600

Affected Vendors & Products

Vendor	Product	Version / Range
gl-inet	comet_gl-rm1_firmware	to 1.8.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

The vulnerability in the GL-iNet Comet (GL-RM1) KVM allows an attacker to access the UART serial console without any authentication.

To exploit this vulnerability, the attacker must physically open the device and connect to the UART pins.

Impact Analysis

Because the UART serial console does not require authentication, an attacker with physical access can gain high-level control over the device.

This can lead to complete compromise of confidentiality, integrity, and availability of the device.

Compliance Impact

I don't know

Detection Guidance

This vulnerability involves unauthorized access to the UART serial console of the GL-iNet Comet (GL-RM1) KVM device, which requires physical access to the device and connecting to the UART pins.

Because the attack requires physical interaction with the hardware, it cannot be detected through network commands or remote system scans.

No specific commands or network-based detection methods are available to identify this vulnerability.

Mitigation Strategies

To mitigate this vulnerability, restrict physical access to the GL-iNet Comet (GL-RM1) KVM device to trusted personnel only.

Ensure the device is kept in a secure location to prevent unauthorized opening and connection to the UART pins.

Consider implementing physical tamper-evident measures or enclosures to detect or deter unauthorized physical access.

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