What is CVE-2019-6139?

CVE-2019-6139 is a critical-severity vulnerability in Forcepoint User Id, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2019-02-07.

How severe is CVE-2019-6139?

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

Arbitrary file upload in Forcepoint User Id

CVE-2019-6139

Forcepoint User ID (FUID) server versions up to 1.2 have a remote arbitrary file upload vulnerability on TCP port 5001. Successful exploitation of this vulnerability may lead to remote code execution. To fix this vulnerability, upgrade to FUID version 1.3 or higher. To prevent the vulnerability on FUID versions 1.2 and below, apply local firewall rules on the FUID server to disable all external access to port TCP/5001. FUID requires this port only for local connections through the loopback interface.

Vulnerability class: Unrestricted File Upload

Published 2019-02-07 · 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: 0.024 (83.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000

Affected products

Forcepoint User Id
Forcepoint . User Id (Fuid) Server — versions Forcepoint User ID (FUID) server versions up to 1.2

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

help.forcepoint.com/security/CVE/CVE-2019-6139.html (Vendor Advisory)

Frequently asked questions

What is CVE-2019-6139?: CVE-2019-6139 is a critical-severity vulnerability in Forcepoint User Id, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2019-02-07.
How severe is CVE-2019-6139?: Critical severity. CVSS v3 base score is 9.8 out of 10.