What is CVE-2018-8940?

CVE-2018-8940 is a critical-severity vulnerability in Enghouse Contact Center\, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2019-05-14.

How severe is CVE-2018-8940?

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

XXE in Enghouse Contact Center\

CVE-2018-8940

ClientServiceConfigController.cs in Enghouse Cloud Contact Center Platform 7.2.5 has functionality for loading external XML files and parsing them, allowing an attacker to upload a malicious XML file and reference it in the URL of the application, forcing the application to load and parse the malicious XML file, aka an XXE issue.

Vulnerability class: XXE (XML External Entity)

Published 2019-05-14 · 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: 0.016 (75.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Enghouse Contact Center\ — versions _service_provider
Enghouse Contact Center\: Service Provider — versions 7.2.5

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

seclists.org/fulldisclosure/2019/May/9 (Exploit, Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2018-8940?: CVE-2018-8940 is a critical-severity vulnerability in Enghouse Contact Center\, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2019-05-14.
How severe is CVE-2018-8940?: Critical severity. CVSS v3 base score is 9.8 out of 10.