CVE-2019-17191 json
The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered, without callee user inte…
published 2019-10-05 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7623
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.8%
- EPSS 1.8% chance of exploitation in 30 days, percentile 78%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- signal private_messenger 4.47.7
Exploit prediction
1.75% chance of exploitation in the next 30 days, higher than 78% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- news.ycombinator.com https://news.ycombinator.com/item?id=21161432 referenced PoC, tagged "exploit" by a source, unverified
- bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=1943 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
news.ycombinator.com
/item?id=21161432
exploit, issue-tracking, third-party-advisory
-
bugs.chromium.org
/p/project-zero/issues/detail?id=1943
exploit, third-party-advisory
-
twitter.com
/moxie/status/1180261210341511168
third-party-advisory
Sources
- CVE List CVE-2019-17191
- NVD CVE-2019-17191
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.