CVE-2019-19866Network attack vector

Conference PIN disclosure via enumerable conference identifiers

Published Feb 21, 2020 · Updated Aug 5, 2024

Authorization bypass in Atos Unify OpenScape UC Web Client V9 before R4.31.0 and V10 before R0.6.0 allows remote attackers to read conference PINs. The getMailFunction JSON API accepts an attacker-controlled conferenceId and returns the referenced conference without enforcing object-level authorization. No authentication or user interaction is required, and iterating identifiers discloses every scheduled conference, its number, and its access PIN.

CVSS severity7.5
High
EPSS probability1.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Atos Unify OpenScape UC Web Client V9 before R4.31.0 and V10 before R0.6.0 allows remote attackers to read conference PINs. The getMailFunction JSON API accepts an attacker-controlled conferenceId and returns the referenced conference without enforcing object-level authorization. No authentication or user interaction is required, and iterating identifiers discloses every scheduled conference, its number, and its access PIN.

The record

CVE
CVE-2019-19866
Published
Feb 21, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-639, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 21, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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