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No exploitation reportedFix available

CVE-2019-17191

No exploitation reported by the sources we read.

  • Published2019-10-05
  • Fixed in4.47.7
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2019-10-0502:15CVE publishedNVD

Versions per branch

NVD
Signal private messenger
BranchAffectedFixed in
4.47< 4.47.74.47.7

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Signal private messenger to 4.47.7

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published
2019-10-05
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-hpqc-h2q8-cmcj

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 2026-11-08, 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), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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Sources for this record