CVE-2026-4478— Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification
Quick assessment
Affected
Yi Technology YI Home Camera
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Yi Technology YI Home Camera 2是中国Yi Technology公司的一款智能家用摄像设备。 Yi Technology YI Home Camera 2 2.1.1_20171024151200版本存在数据伪造问题漏洞，该漏洞源于组件HTTP Firmware Update Handler的文件home/web/ipc存在加密签名验证不当。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-4478
Vulnerability Information
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Vulnerability Title
Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Yi Technology YI Home Camera 2 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yi Technology YI Home Camera 2是中国Yi Technology公司的一款智能家用摄像设备。 Yi Technology YI Home Camera 2 2.1.1_20171024151200版本存在数据伪造问题漏洞，该漏洞源于组件HTTP Firmware Update Handler的文件home/web/ipc存在加密签名验证不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Yi Technology | YI Home Camera | 2 2.1.1_20171024151200 | - |
|
II. Public POCs for CVE-2026-4478
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Yi Technology · 2026-03-20 · 4 CVEs total
| CVE-2026-4475 | 8.8 HIGH | Yi Technology YI Home Camera ipc hard-coded credentials |
| CVE-2026-4476 | 6.3 MEDIUM | Yi Technology YI Home Camera CGI Endpoint ipc missing authentication |
| CVE-2026-4477 | 3.1 LOW | Yi Technology YI Home Camera WPA/WPS hard-coded key |
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V. Comments for CVE-2026-4478
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