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Vulnerability record · CVE-2026-4478 · published 20 March 2026

CVE-2026-4478: Insufficient verification of data authenticity vulnerability

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.

8.2 CVSS 4.0 High EPSS 0.30% · top 80.1% CWE-345 · Insufficient verification of data authenticityCWE-347 · Improper verification of cryptographic signature Deferred
8.2CVSS 4.0 base score, v2 7.6
0.30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://vuldb.com/?ctiid.351768
https://vuldb.com/?id.351768
https://vuldb.com/?submit.773162

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Source: NIST National Vulnerability Database (record CVE-2026-4478), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.