What is CVE-2026-4478?

CVE-2026-4478 is a high-severity vulnerability in Yi Technology Home Camera, classified under Improper Verification of Cryptographic Signature. 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.

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…

EPSS: 0.000 (0.4th 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/E:P/RL:X/RC:R.

Affected products

Yi Technology Home Camera — versions 2 2.1.1_20171024151200

Weakness classification (CWE)

References

VDB-351768 | Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification (vdb-entry)
VDB-351768 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
Submit #773162 | yitechnology YI Home Camera 2 2.1.1_20171024151200 HTTP Firmware OTA Without Cryptographic Signature (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 Improper Verification of Cryptographic Signature. 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.