CVE-2026-20892Network attack vector

Administrator command execution via undisclosed code injection

Published Mar 11, 2026 · Updated Mar 11, 2026

Code injection in Micro Research MR-GM5L-S1 and MR-GM5A-L1 before 2.01.04N1_02 allows remote authenticated users to execute commands. The vendor confirms root-level code execution after configuration-interface login but does not disclose the vulnerable request, parameter, or code path. Administrative access to the network-exposed interface is required; successful exploitation grants control of the device and permits data access or modification.

CVSS severity8.6
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Micro Research MR-GM5L-S1 and MR-GM5A-L1 before 2.01.04N1_02 allows remote authenticated users to execute commands. The vendor confirms root-level code execution after configuration-interface login but does not disclose the vulnerable request, parameter, or code path. Administrative access to the network-exposed interface is required; successful exploitation grants control of the device and permits data access or modification.

The record

CVE
CVE-2026-20892
Published
Mar 11, 2026
Updated
Mar 11, 2026
Vendor
Micro Research Ltd.
Product
MR-GM5A-L1
Classifications
CWE-94, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=firmware versions prior to v2.01.04N1_02

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Micro Research Ltd. · MR-GM5A-L1version=firmware versions prior to v2.01.04N1_02
Micro Research Ltd. · MR-GM5L-S1version=firmware versions prior to v2.01.04N1_02

Published CVSS scores

8.6JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.2JPCERT/CCCVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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