Is CVE-2026-4478 actively exploited?

No active exploitation of CVE-2026-4478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-4478 be exploited remotely?

Yes. CVE-2026-4478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-4478?

CVE-2026-4478 has a CVSS score of 8.1 (HIGH).

HOME VULNERABILITIESCVE-2026-4478

HIGH

CVE-2026-4478

CWE-345Published: March 20, 2026· Updated: Mar 20, 2026

8.1

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:1.0th

Official 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.

NVD Source

Technical Analysis

CVE-2026-4478 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.1.