CVE-2019-17191
CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2019-10-05
Frequently asked questions
What is CVE-2019-17191?
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.
Is CVE-2019-17191 actively exploited?
Active exploitation of CVE-2019-17191 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-17191?
CVE-2019-17191 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-17191 affecting your environment?
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