What is CVE-2019-9623?

CVE-2019-9623 is a critical-severity vulnerability in Fengoffice Feng Office, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2019-03-07.

How severe is CVE-2019-9623?

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

Arbitrary file upload in Fengoffice Feng Office

CVE-2019-9623

Feng Office 3.7.0.5 allows remote attackers to execute arbitrary code via "<!--#exec cmd=" in a .shtml file to ck_upload_handler.php.

Vulnerability class: Unrestricted File Upload

Published 2019-03-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.081 (94.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.081 · newest: 0.081 · change: 0.000

Affected products

Fengoffice Feng Office — versions 3.7.0.5

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.exploit-db.com/exploits/46471 (Exploit, VDB Entry, Third Party Advisory, exploit)
pentest.com.tr/exploits/Feng-Office-3-7-0-5-Unauthenticated-Remote-Command-Exec… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2019-9623?: CVE-2019-9623 is a critical-severity vulnerability in Fengoffice Feng Office, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2019-03-07.
How severe is CVE-2019-9623?: Critical severity. CVSS v3 base score is 9.8 out of 10.