What is CVE-2026-26478?

CVE-2026-26478 is a critical-severity vulnerability in Mobvoi Tichome Mini, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-04.

How severe is CVE-2026-26478?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Mobvoi Tichome Mini

CVE-2026-26478

A shell command injection vulnerability in Mobvoi Tichome Mini smart speaker 012-18853 and 027-58389 allows remote attackers to send a specially crafted UDP datagram and execute arbitrary shell code as the root account.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.030 (87.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.020 · newest: 0.030 · change: +0.010

Affected products

Mobvoi Tichome Mini
Mobvoi Tichome Mini Firmware — versions 012-18853, 027-58389

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

github.com/pastcompute/tichome-poc-1 (Exploit, Third Party Advisory)
web.archive.org/web/20171202094530/ (Not Applicable)

Frequently asked questions

What is CVE-2026-26478?: CVE-2026-26478 is a critical-severity vulnerability in Mobvoi Tichome Mini, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-03-04.
How severe is CVE-2026-26478?: Critical severity. CVSS v3 base score is 9.8 out of 10.