CVE-2026-30603

MEDIUMNVD 6.86.8—Elevated

6.8

An issue in the firmware update mechanism of Qianniao QN-L23PA0904 v20250721.1640 allows attackers to gain root access, install backdoors, and exfiltrate data via supplying a crafted iu.sh script contained in an SD card.

CVSS v3: 6.8
EG Score: 6.8(medium)
EPSS: 1.4%
KEV: Not listed

Published

April 2, 2026

Last Modified

April 3, 2026

References (3)

cve@mitrehttp://qianniao.com
cve@mitrehttp://qn-l23pa0904.com
cve@mitrehttps://github.com/0xghostrush/Research/blob/main/CVE-2026-30603/CVE-2026-30603.md

Weakness Classification(2)

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

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
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2026-05-29 13:44 UTCepss_batch
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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
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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-2026-30603?

CVE-2026-30603 is a medium vulnerability published on April 2, 2026. An issue in the firmware update mechanism of Qianniao QN-L23PA0904 v20250721.1640 allows attackers to gain root access, install backdoors, and exfiltrate data via supplying a crafted iu.sh script contained in an SD card.

When was CVE-2026-30603 disclosed?

CVE-2026-30603 was first published in the National Vulnerability Database on April 2, 2026, with the most recent update on April 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-30603 actively exploited?

CVE-2026-30603 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-30603?

CVE-2026-30603 has a CVSS v3 base score of 6.8 (NVD).

How do I remediate CVE-2026-30603?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-30603, 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-2026-30603

📅 Published

🔄 Last Modified

🔗 References (3)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-30603?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (3)

Frequently asked(5)

Related CVEs(same CWE)