CVE-2019-17191

high

Description

The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered, without callee user interaction, via a connect message. The existence of the call is noticeable to the callee; however, the audio channel may be open before the callee can block eavesdropping.

References

https://twitter.com/moxie/status/1180261210341511168

https://news.ycombinator.com/item?id=21161432

https://bugs.chromium.org/p/project-zero/issues/detail?id=1943

Details

Source: Mitre, NVD

Published: 2019-10-05

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00319