EUVD-2026-30045
Incorrect Default Permissions (CWE-276)
GHSA-cgmh-m268-gqfx
6.8
CVSS 3.1
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CVSS VectorNVD
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
4
Analysis Generated
May 14, 2026 - 13:23 vuln.today
CVSS changed
May 14, 2026 - 13:22 NVD
6.8 (MEDIUM)
CVE Published
May 13, 2026 - 16:16 nvd
UNKNOWN (no severity yet)
CVE Published
May 13, 2026 - 16:16 nvd
MEDIUM 6.8
DescriptionNVD
Hiseeu C90 v5.7.15 is vulnerable to Insecure Permissions. The UART bootloader is accessible when battery is disconnected (hidden/debug mode).
AnalysisAI
Hiseeu C90 v5.7.15 exposes a UART bootloader in debug mode when the device battery is disconnected, allowing unauthenticated physical attackers with direct hardware access to achieve privilege escalation and potentially execute arbitrary code with full device control. This vulnerability requires physical tampering to trigger but bypasses all software-based security controls once activated.
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External POC / Exploit Code
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