Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Micro Research Ltd. MR-GM5L-S1 affected
Version Status Constraints
firmware versions prior to v2.01.04N1_02 affected
—
Micro Research Ltd. MR-GM5A-L1 affected
Version Status Constraints
firmware versions prior to v2.01.04N1_02 affected
—

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://jvn.jp/en/vu/JVNVU98103854/ cve-icon cve-icon
https://www.mrl.co.jp/download/security/JVNVU98103854.pdf cve-icon cve-icon
History

Wed, 11 Mar 2026 05:30:00 +0000

Type Values Removed Values Added
Description Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration.
Weaknesses CWE-288
References
Metrics cvssV3_0

{'score': 9.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: jpcert

Published:

Updated: 2026-03-11T05:25:34.834Z

Reserved: 2026-03-10T01:23:00.998Z

Link: CVE-2026-27842

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-11T06:17:13.867

Modified: 2026-03-11T06:17:13.867

Link: CVE-2026-27842

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses