CVE-2019-19866

Name: CVE-2019-19866
Creator: NVD / NIST
Published: 2020-02-21T16:15:11.637+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.87%

Last modified Jun 17, 2026

CVE-2019-19866 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Atos Unify OpenScape UC Web Client V9 before version V9 R4.31.0 and V10 before version V10 R0.6.0 allows remote attackers to obtain sensitive information. By iterating the value of conferenceId to getMailFunction in the JSON API, one can enumerate all conferences scheduled on the platform, with their numbers and access PINs.. EPSS estimates a 1.87% chance of exploitation in the next 30 days.

Description

Atos Unify OpenScape UC Web Client V9 before version V9 R4.31.0 and V10 before version V10 R0.6.0 allows remote attackers to obtain sensitive information. By iterating the value of conferenceId to getMailFunction in the JSON API, one can enumerate all conferences scheduled on the platform, with their numbers and access PINs.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.87%

76.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-639

Affected Software

Vendor	Product	Versions
Atos	Unify Openscape Uc Web Client	9.0
Atos	Unify Openscape Uc Web Client	10.0

References

https://networks.unify.com/security/advisories/OBSO-2002-01.pdfVendor Advisory
https://unify.com/en/support/security-advisoriesVendor Advisory
https://networks.unify.com/security/advisories/OBSO-2002-01.pdfVendor Advisory
https://unify.com/en/support/security-advisoriesVendor Advisory

Timeline

Published: Feb 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19866?

How severe is CVE-2019-19866?

CVE-2019-19866 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.87% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19866?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19866?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST