The Open Whisper Signal app before 2.23.2 for iOS allows physically proximate attackers…
Priority LOW 30Published · Updated
Key facts
- Attack vector
- Physical
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.00417 36th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-9840
- 2026-10-03 Alias added: GHSA-9v25-mc3c-w5v3
References
More Signal vulnerabilities
- TI-2025-05154 Signal App Biometric Authentication missing critical step in authentication CVSS 4.0LOW 1.0
- TI-2018-11532 The image rendering component (createGenericPreview) of the Open Whisper Signal app… CVSS 3.0HIGH 8.6
- TI-2022-11105 The Signal app before 5.34 for iOS allows URI spoofing via RTLO injection. CVSS 3.1HIGH 7.5
- TI-2020-04681 Signal Private Messenger Android v4.59.0 and up and iOS v3.8.1.5 and up allows a remote… CVSS 3.1MEDIUM 5.3
Sources
- CVE-2018-9840 · CVE Program
- CVE-2018-9840 · NVD
- FIRST EPSS
- GHSA-9v25-mc3c-w5v3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences