CVE-2019-17192

Name: CVE-2019-17192
Creator: NVD / NIST
Published: 2019-10-05T02:15:11.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.73%

Last modified Jun 17, 2026

CVE-2019-17192 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 2.73% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

2.73%

84.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-670

Affected Software

Vendor	Product	Versions
Signal	Private Messenger	<= 4.47.7

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=1936Third Party Advisory
https://news.ycombinator.com/item?id=21161432Third Party Advisory
https://twitter.com/moxie/status/1180226374851710976Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=1936Third Party Advisory
https://news.ycombinator.com/item?id=21161432Third Party Advisory
https://twitter.com/moxie/status/1180226374851710976Third Party Advisory

Timeline

Published: Oct 5, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-17192?

How severe is CVE-2019-17192?

CVE-2019-17192 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.73% probability of exploitation in the next 30 days.

How do I fix CVE-2019-17192?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-17192?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST