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Vulnerability · Published Aug 9, 2026 · Assigned by VulDB

CVE-2026-19348Shenzhen Aitemi M300 Wi-Fi Repeater protocol.csp sprintf command injection

Critical 9.8

In plain English

A critical-severity command injection in M300 Wi-Fi Repeater from Shenzhen Aitemi. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 3.6% (higher than 89% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)3.6%top 10.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
Shenzhen Aitemi M300 Wi-Fi Repeater r0-ea7890a

Weakness: CWE-77, CWE-74 · Vector: 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

References