Is CVE-2019-12803 actively exploited?

No active exploitation of CVE-2019-12803 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-12803 be exploited remotely?

Yes. CVE-2019-12803 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-12803?

CVE-2019-12803 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-12803

CRITICAL

CVE-2019-12803

CWE-434Published: July 10, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In Hunesion i-oneNet version 3.0.7 ~ 3.0.53 and 4.0.4 ~ 4.0.16, the specific upload web module doesn't verify the file extension and type, and an attacker can upload a webshell. After the webshell upload, an attacker can use the webshell to perform remote code exection such as running a system command.

NVD Source

Technical Analysis

CVE-2019-12803 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.