The MessageStatusReceiver service in the AndroidManifest.XML in Android 5.1.1 and earlier allows local users to alter sent/received statuses of SMS and MMS messages without the associated "WRITE_SMS" permission.
Conclusion & alert: CVE-2015-3840 is rated Exploit Available (50/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.19%).Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB).Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
Public exploit references (Exploit-DB) for CVE-2015-3840
Exploit prediction scoring system (EPSS) score for CVE-2015-3840
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).