CVE-2019-17192: Signal Private Messenger

Critical severity, CVSS 9.8. EPSS: 2.7% chance of exploitation in the next 30 days.

The WebRTC component in the Signal Private Messenger application through 4.47.7 for Android processes videoconferencing RTP packets before a callee chooses to answer a call, which might make it easier for remote attackers to cause a denial of service or possibly have unspecified other impact via malformed packets. NOTE: the vendor plans to continue this behavior for performance reasons unless a WebRTC design change occurs

Affected products

• Signal Private Messenger: up to and including 4.47.7

Published 2019-10-05. Last modified 2026-06-17.