Auth bypass in Textnow 2ndline
CVE-2025-43976
The com.enflick.android.tn2ndLine application through 24.17.1.0 for Android enables any installed application (with no permissions) to place phone calls without user interaction by sending a crafted intent via the com.enflick.android.TextNow.activities.DialerActivity component.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (8.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 8th percentile — 8.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Textnow 2ndline — versions 24.17.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- play.google.com/store/apps/details (Product)
- github.com/actuator/com.enflick.android.tn2ndLine (Exploit)
- github.com/actuator/com.enflick.android.tn2ndLine/blob/main/CVE-2025-43976 (Third Party Advisory)
Frequently asked questions
- What is CVE-2025-43976?
- CVE-2025-43976 is a medium-severity vulnerability in Textnow 2ndline, classified under Missing Authorization. CVSS score: 5.5/10. Published 2025-07-21.
- How severe is CVE-2025-43976?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2025-43976 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.