CVE-2024-42936

CRITICALNVD 9.89.8—Elevated

9.8

The mqlink.elf is service component in Ruijie RG-EW300N with firmware ReyeeOS 1.300.1422 is vulnerable to Remote Code Execution via a modified MQTT broker message.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 87.6%
KEV: Not listed

Published

January 21, 2025

Last Modified

December 15, 2025

Advisory Details (1)

Auto-updated Jun 5, 2026

No patch confirmed yet.

generic

[CVE-2024-42936] RG-EW300n Vulnerability, Remote code execution via intercept and modified MQTT message. · GitHub

https://gist.github.com/smrx86/2008111b12ab47882b3928d0cbc9e415

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-94Improper Control of Generation of Code (Code Injection)

Data Freshness Timeline

(refreshed 10× in last 7d / 19× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 22:46 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-02 20:12 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-06-01 13:51 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 22:30 UTCEPSS rescore
2026-05-31 00:16 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-30 13:00 UTCEG score recompute
2026-05-30 13:00 UTCGHSA enrichment
2026-05-29 13:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2024-42936?

CVE-2024-42936 is a critical vulnerability published on January 21, 2025. The mqlink.elf is service component in Ruijie RG-EW300N with firmware ReyeeOS 1.300.1422 is vulnerable to Remote Code Execution via a modified MQTT broker message.

When was CVE-2024-42936 disclosed?

CVE-2024-42936 was first published in the National Vulnerability Database on January 21, 2025, with the most recent update on December 15, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-42936 actively exploited?

CVE-2024-42936 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-42936?

CVE-2024-42936 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2024-42936?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-42936, 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.

Dependency Blast Radius

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CVE-2024-42936

📅 Published

🔄 Last Modified

📋 Advisory Details (1)

[CVE-2024-42936] RG-EW300n Vulnerability, Remote code execution via intercept and modified MQTT message. · GitHub

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-42936?

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Advisory Details (1)

Frequently asked(5)

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