Vulnerability Database

309,364

Total vulnerabilities in the database

CVE-2018-9840

The Open Whisper Signal app before 2.23.2 for iOS allows physically proximate attackers to bypass the screen locker feature via certain rapid sequences of actions that include app opening, clicking on cancel, and using the home button.

  • Published: Apr 10, 2018
  • Updated: Nov 9, 2025
  • CVE: CVE-2018-9840
  • Severity: Low
  • Exploit:

CVSS v2:

  • Severity: Low
  • Score: 4.6
  • AV:L/AC:L/Au:N/C:P/I:P/A:P

No CWE or OWASP classifications available.