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CVE-2026-4478

HIGH CVSS 4.0: 8.2 EPSS 0.01%
Updated Mar 20, 2026
Parameter Value
CVSS 8.2 (HIGH)
Type CWE-347 (Improper Verification of Cryptographic Signature), CWE-345 (Insufficient Verification of Data)
Public PoC No

A vulnerability was identified in Yi Technology YI Home Camera 2 2.1.1_20171024151200. This impacts an unknown function of the file home/web/ipc of the component HTTP Firmware Update Handler. The manipulation leads to improper verification of cryptographic signature.

The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is said to be difficult.

The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v4.0