The SIM Toolkit (STK) framework in Android before 5.1.1 LMY48I allows attackers to (1) intercept or (2) emulate unspecified Telephony STK SIM commands via an application that sends a crafted Intent, related to com/android/internal/telephony/cat/AppInterface.java, aka internal bug 21697171.
Conclusion & alert: CVE-2015-3843 is rated Moderate Risk (63.3/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 1.54%). Core evidence: EPSS rose +1.04% over the last day, indicating growing attacker interest. Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.49% | 1.54% | +1.04% |
| 2 | 2025-03-30 | 0.65% | 0.49% | -0.15% |
| 3 | 2025-03-29 | — | 0.65% | — |
Full EPSS history (6 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |