What is CVE-2023-25909?

CVE-2023-25909 is a critical-severity vulnerability in Hgiga Oaklouds Portal, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-03-27.

How severe is CVE-2023-25909?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Hgiga Oaklouds Portal

CVE-2023-25909

HGiga OAKlouds file uploading function does not restrict upload of file with dangerous type. An unauthenticated remote attacker can exploit this vulnerability to upload and run arbitrary executable files to perform arbitrary command or disrupt service.

Vulnerability class: Unrestricted File Upload

Published 2023-03-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (59.5th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Hgiga Oaklouds Portal
Hgiga Inc. Oaklouds — versions 2, 3

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.twcert.org.tw/tw/cp-132-6973-45872-1.html (Third Party Advisory)

Frequently asked questions

What is CVE-2023-25909?: CVE-2023-25909 is a critical-severity vulnerability in Hgiga Oaklouds Portal, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-03-27.
How severe is CVE-2023-25909?: Critical severity. CVSS v3 base score is 9.8 out of 10.