CVE-2026-19348

Shenzhen Aitemi M300 Wi-Fi Repeater protocol.csp sprintf command injection

State: Published
Severity: 9.3 Critical
Published: Aug 9, 2026
Updated: Aug 10, 2026
Reserved: Aug 8, 2026

Description

A security flaw has been discovered in Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a. Impacted is the function sprintf of the file /protocol.csp?fname=net&opt=smacfilter_conf&function=set&act=add&name=test&enable=1. Performing a manipulation of the argument enable/name/mac results in command injection. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P	VulDB
3.1	9.8 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R	VulDB
3.0	9.8 Critical	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R	VulDB
2.0	10.0 High	AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:UR	VulDB

Weaknesses

CWE-77 Command Injection
CWE-74 Injection

Affected Products

Product	Versions
M300 Wi-Fi RepeaterShenzhen Aitemi	r0-ea7890aAffected

References

VDB-387184 | Shenzhen Aitemi M300 Wi-Fi Repeater protocol.csp sprintf command injectionvdb-entrytechnical-description
VDB-387184 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-19348 | CVE Analysis and Reportthird-party-advisory
Submit #865682 | Shenzhen Aitemi Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a Command Injectionthird-party-advisory
Submit #865683 | Shenzhen Aitemi M300 Wifi Repeater r0-ea7890a Command Injection (Duplicate)third-party-advisory
Submit #865684 | Shenzhen Aitemi M300 Wifi Repeater r0-ea7890a Command Injection (Duplicate)third-party-advisory
https://github.com/IEATASICS/m300-repeater-bugsexploit

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