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CVE-2019-17191

HIGH
7.5
CVSS Score
Published: October 5, 2019 at 01:15 AM UTC
Updated: June 17, 2026 at 02:23 AM UTC
1 product affected across 1 vendorPrivate Messenger

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Severity
HIGH7.5
Exploit prediction
EPSS 2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Private Messenger· Signal
95%
v < 4.47.7
Affected range stops below 4.47.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://bugs.chromium.org/p/project-zero/issues/detail?id=1943
x_refsource_MISCExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://news.ycombinator.com/item?id=21161432
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://twitter.com/moxie/status/1180261210341511168

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-863

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