Vulnerability in Yi Technology Home Camera
CVE-2026-4478
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.
EPSS: 0.003 (19.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Yi Technology Home Camera — versions 2 2.1.1_20171024151200
Weakness classification (CWE)
References
- cna@vuldb.com (vdb-entry)
- cna@vuldb.com (signature, permissions-required)
- cna@vuldb.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-4478?
- CVE-2026-4478 is a high-severity vulnerability in Yi Technology Home Camera, classified under Insufficient Verification of Data Authenticity. CVSS score: 8.1/10. Published 2026-03-20.
- How severe is CVE-2026-4478?
- High severity. CVSS v3 base score is 8.1 out of 10.