No exploitation reported

CVE-2019-19866

No exploitation reported by the sources we read.

Published2020-02-21
WeaknessCWE-639

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2020-02-2116:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2019-19866?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2019-19866?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Atos unify openscape uc web client

Branch	Affected	Fixed in	Source
9.0	= 9.0	no fix published	NVD
10.0	= 10.0	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

networks.unify.comVendor Advisory
unify.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.17.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-639read 2026-10-23
FIRST EPSSEPSS score1.9 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2020-02-21
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2019-19866?

Is CVE-2019-19866 actively exploited?

Active exploitation of CVE-2019-19866 has not been confirmed. Its EPSS score was 1.9% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-19866?

CVE-2019-19866 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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