What is the CVSS score of CVE-2026-26478?

CVE-2026-26478 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.2%.

Which versions of Tichome Mini Firmware are affected by CVE-2026-26478?

A critical remote code execution vulnerability affecting Mobvoi Tichome Mini smart speakers (models 012-18853 and 027-58389) allows unauthenticated attackers to gain root-level system access via…

Is there a public PoC exploit available for CVE-2026-26478?

Yes, a public proof-of-concept exploit is available for CVE-2026-26478. Prioritise patching immediately. EPSS: 1.2%.

How to fix or mitigate CVE-2026-26478?

Within 24 hours: Identify and inventory all affected Mobvoi Tichome Mini models in your environment; isolate affected devices from production networks and sensitive systems. Within 7 days: Implement network segmentation to restrict UDP communication to affected devices; deploy compensating controls; notify stakeholders of exposure status. Within 30 days: Coordinate with Mobvoi for patch timeline and apply immediately upon availability; decommission devices if no patch is released within 60 days.

Tichome Mini Firmware CVE-2026-26478

CRITICAL

OS Command Injection (CWE-78)

2026-03-04 cve@mitre.org

Command Injection Tichome Mini Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:05 vuln.today

PoC Detected

Mar 05, 2026 - 18:13 vuln.today

Public exploit code

CVE Published

Mar 04, 2026 - 16:16 nvd

CRITICAL 9.8

DescriptionCVE.org

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.