Is upgrading to a newer or an option for you?
| Risk Vector | Severity | Explanation | |-------------|----------|--------------| | Unpatched OpenSSL | | Android 4.2.2 has Heartbleed-patched? No – it has CVE-2014-0160 fixed but missing dozens of newer CVEs. | | No Google Play Protect | High | The old APK cannot receive security updates; a MITM attack could inject malicious code. | | Weak app sandbox | Medium | Android 4.2.2’s seccomp filtering is primitive. A malicious app could read Telegram’s SQLite DB. | | Account takeover risk | Medium | If you lose the device, remote wipe doesn’t work reliably on 4.2.2. | telegram apk for android 4.2.2