CVE-2019-12803: Hunesion i-oneNet unrestricted file upload vulnerability

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-07-10 · updated 2026-06-17
Weakness: CWE-434

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.

Affected products

Hunesion i-oneNet: from 3.0.7 through 3.0.53; from 4.0.4 through 4.0.16

References

https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35073
https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35073

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