The Walton Primo G3 Android device with a build fingerprint of WALTON/Primo_GM3/Primo_GM3:8.1.0/O11019/1522737198:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Panasonic Eluga Ray 600 Android device with a build fingerprint of Panasonic/ELUGA_Ray_600/ELUGA_Ray_600:8.1.0/O11019/1532692680:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Cherry Flare S7 Android device with a build fingerprint of Cherry_Mobile/Flare_S7_Deluxe/Flare_S7_Deluxe:8.1.0/O11019/1533920920:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Panasonic Eluga Ray 530 Android device with a build fingerprint of Panasonic/ELUGA_Ray_530/ELUGA_Ray_530:8.1.0/O11019/1531828974:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Haier G8 Android device with a build fingerprint of Haier/HM-G559-FL/G8:8.1.0/O11019/1522294799:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Lava Iris 88 Lite Android device with a build fingerprint of LAVA/iris88_lite/iris88_lite:8.1.0/O11019/1536323070:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Symphony i95 Lite Android device with a build fingerprint of LAVA/iris88_lite/iris88_lite:8.1.0/O11019/1536323070:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Hisense F17 Android device with a build fingerprint of Hisense/F17_4G/HS6739MT:8.1.0/O11019/Hisense_F17_4G_00_S01:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Symphony G100 Android device with a build fingerprint of Symphony/G100/G100:8.1.0/O11019/1530618779:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Haier G8 Android device with a build fingerprint of Haier/HM-G559-FL/G8:8.1.0/O11019/1526527761:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Lava Z61 Turbo Android device with a build fingerprint of LAVA/Z61_Turbo/Z61_Turbo:8.1.0/O11019/1536917928:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Coolpad 1851 Android device with a build fingerprint of Coolpad/android/android:8.1.0/O11019/1534834761:userdebug/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Haier P10 Android device with a build fingerprint of Haier/P10/P10:8.1.0/O11019/1532662449:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Infinix Note 5 Android device with a build fingerprint of Infinix/H633IJL/Infinix-X604_sprout:8.1.0/O11019/IJL-180531V181:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Lava Z92 Android device with a build fingerprint of LAVA/Z92/Z92:8.1.0/O11019/1535088037:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Dexp BL250 Android device with a build fingerprint of DEXP/BL250/BL250:8.1.0/O11019/1530858027:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Leagoo Power 5 Android device with a build fingerprint of LEAGOO/Power_5/Power_5:8.1.0/O11019/1532686195:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Lava Iris 88 Go Android device with a build fingerprint of LAVA/iris88_go/iris88_go:8.1.0/O11019/1538188945:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Infinix Note 5 Android device with a build fingerprint of Infinix/H632C/Infinix-X605_sprout:8.1.0/O11019/CE-180914V59:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.

The Hisense U965 Android device with a build fingerprint of Hisense/U965_4G_10/HS6739MT:8.1.0/O11019/Hisense_U965_4G_10_S01:user/release-keys contains a pre-installed app with a package name of com.mediatek.wfo.impl app (versionCode=27, versionName=8.1.0) that allows any app co-located on the device to modify a system property through an exported interface without proper authorization.