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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.

PUBLISHED Reserved 2026-03-19 | Published 2026-03-20 | Updated 2026-03-20 | Assigner VulDB




CRITICAL: 9.2CVSS: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
HIGH: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
HIGH: 8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
7.6AV:N/AC:H/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR

Problem types

Improper Verification of Cryptographic Signature

Insufficient Verification of Data Authenticity

Product status

2 2.1.1_20171024151200
affected

Timeline

2026-03-19:Advisory disclosed
2026-03-19:VulDB entry created
2026-03-19:VulDB entry last update

Credits

0rbitingZer0 (VulDB User) reporter

VulDB coordinator

References

vuldb.com/?id.351768 (VDB-351768 | Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification) vdb-entry

vuldb.com/?ctiid.351768 (VDB-351768 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.773162 (Submit #773162 | yitechnology YI Home Camera 2 2.1.1_20171024151200 HTTP Firmware OTA Without Cryptographic Signature) third-party-advisory

cve.org (CVE-2026-4478)

nvd.nist.gov (CVE-2026-4478)

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