CVE-2026-30603

Severity CVSS v4.0:

Pending analysis

Type:

CWE-345 Insufficient Verification of Data Authenticity

Publication date:

02/04/2026

Last modified:

03/04/2026

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

6.80

Severity 3.x

MEDIUM

References to Advisories, Solutions, and Tools

http://qianniao.com
http://qn-l23pa0904.com
https://github.com/0xghostrush/Research/blob/main/CVE-2026-30603/CVE-2026-30603.md