What is CVE-2019-8394?

CVE-2019-8394 is a medium-severity vulnerability in Zohocorp Manageengine Servicedesk Plus, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.5/10. Published 2019-02-17.

How severe is CVE-2019-8394?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Is CVE-2019-8394 known to be exploited?

Yes. CVE-2019-8394 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.

Arbitrary file upload in Zohocorp Manageengine Servicedesk Plus

CVE-2019-8394

Zoho ManageEngine ServiceDesk Plus (SDP) before 10.0 build 10012 allows remote attackers to upload arbitrary files via login page customization.

Vulnerability class: Unrestricted File Upload

Published 2019-02-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.633 (99.2th percentile), scored 2026-10-19.

High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.633 · newest: 0.633 · change: 0.000

Affected products

Zohocorp Manageengine Servicedesk Plus — versions 10.0.0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2021-11-03. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-05-03.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.exploit-db.com/exploits/46413/ (Exploit, VDB Entry, Third Party Advisory, exploit)
www.securityfocus.com/bid/107129 (VDB Entry, Third Party Advisory, vdb-entry)
www.manageengine.com/products/service-desk/readme.html (Release Notes, Vendor Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)

Frequently asked questions

What is CVE-2019-8394?: CVE-2019-8394 is a medium-severity vulnerability in Zohocorp Manageengine Servicedesk Plus, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.5/10. Published 2019-02-17.
How severe is CVE-2019-8394?: Medium severity. CVSS v3 base score is 6.5 out of 10.
Is CVE-2019-8394 known to be exploited?: Yes. CVE-2019-8394 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 6 public proof-of-concept repositories are indexed.