CVE-2026-27842

CRITICALNVD 9.89.8—

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 33.4%
KEV: Not listed

Published

March 11, 2026

Last Modified

April 30, 2026

Advisory Details (1)

Auto-updated May 10, 2026

No patch confirmed yet.

generic

JVNVU#98103854: Multiple vulnerabilities in Micro Research MR-GM5L-S1 and MR-GM5A-L1

https://jvn.jp/en/vu/JVNVU98103854/

Data Freshness Timeline

(refreshed 17× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
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2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
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2026-05-28 13:44 UTCepss_batch
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2026-05-27 13:40 UTCepss_batch
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2026-05-26 13:44 UTCepss_batch
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2026-05-26 07:18 UTCepss_batch
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2026-05-24 16:59 UTCepss_batch
2026-05-23 15:21 UTCepss_batch
2026-05-22 21:16 UTCepss_batch

Frequently asked(5)

What is CVE-2026-27842?

CVE-2026-27842 is a critical vulnerability published on March 11, 2026. 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.

When was CVE-2026-27842 disclosed?

CVE-2026-27842 was first published in the National Vulnerability Database on March 11, 2026, with the most recent update on April 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-27842 actively exploited?

CVE-2026-27842 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-27842?

CVE-2026-27842 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2026-27842?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-27842, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2026-27842

📅 Published

🔄 Last Modified

📋 Advisory Details (1)