CVE-2026-36742

MEDIUMNVD 6.86.8—

6.8

Hiseeu C90 v5.7.15 is vulnerable to Insecure Permissions. The UART bootloader is accessible when battery is disconnected (hidden/debug mode).

CVSS v3: 6.8
EG Score: 6.8(high)
EPSS: 7.3%
KEV: Not listed

Published

May 13, 2026

Last Modified

May 14, 2026

Advisory Details (2)

Auto-updated May 14, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

vulnerability-research/IoT/CVE-2026-36742 at main · N0tMilk/vulnerability-research · GitHub

https://github.com/N0tMilk/vulnerability-research/tree/main/IoT/CVE-2026-36742

generic

GitHub - N0tMilk/vulnerability-research: This repository contains information on all of the CVEs I found. · GitHub

https://github.com/N0tMilk/vulnerability-research

Weakness Classification(1)

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

CWE-276Incorrect Default Permissions

Data Freshness Timeline

(refreshed 16× 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
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 12:33 UTCEG score recompute
2026-05-20 12:33 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-36742?

CVE-2026-36742 is a medium vulnerability published on May 13, 2026. Hiseeu C90 v5.7.15 is vulnerable to Insecure Permissions. The UART bootloader is accessible when battery is disconnected (hidden/debug mode).

When was CVE-2026-36742 disclosed?

CVE-2026-36742 was first published in the National Vulnerability Database on May 13, 2026, with the most recent update on May 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-36742 actively exploited?

CVE-2026-36742 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 7.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-36742?

CVE-2026-36742 has a CVSS v3 base score of 6.8 (NVD).

How do I remediate CVE-2026-36742?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-36742, 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-2026-36742

📅 Published

🔄 Last Modified

📋 Advisory Details (2)