ranasen-rat/cve-2025-48593Technical analysis of a critical zero-click remote code execution vulnerability (CVE-2025-48593) affecting Android 13-16, detailing root cause, exploitation flow, and mitigation strategies.
Author: LAKSHMIKANTHAN K (letchupkt)
Date: November 2025
Severity: Critical
A critical zero-click remote code execution vulnerability affecting Android 13-16 devices.
| Attribute | Details |
|---|---|
| CVE ID | CVE-2025-48593 |
| Severity | Critical (Remote Code Execution, Zero-Click) |
| CVSS Score | 9.8 (Estimated, pending NVD confirmation) |
| Attack Vector | Network (Remote) |
| User Interaction | None Required |
| Privileges Required | None |
| Exploit Status | No public PoC available (as of Nov 4, 2025) |
The following Android versions are vulnerable if not patched:
Warning: Unpatched devices remain fully exposed to this vulnerability.
The vulnerability exists due to improper input validation in the Android System component. This flaw allows remote attackers to overflow buffers and inject executable code without any user interaction.
// Simplified pseudocode showing the vulnerability
void process_system_packet(Packet *p) {
if (p->type == MALICIOUS_TYPE) {
// Missing bounds check allows buffer overflow
memcpy(kernel_buffer, p->payload, p->size); // CVE-2025-48593
execute_payload(); // Remote code execution achieved
}
}
The lack of bounds checking on the memcpy() operation allows an attacker to write beyond the allocated buffer, leading to arbitrary code execution in kernel context.
# Verify your device's security patch level
adb shell getprop ro.build.version.security_patch
# Expected output: 2025-11-01 or 2025-11-05
Install Security Updates Immediately
Enable Google Play Protect
Network Security Precautions
Other CVEs disclosed in the same security bulletin:
| CVE ID | Severity | Type | Affected Versions |
|---|---|---|---|
| CVE-2025-48581 | High | Elevation of Privilege | Android 16 only |
CVE-2025-48593 in Android Git%%{init: {'theme': 'base', 'themeVariables': {'fontSize': '13px', 'fontFamily': 'Arial', 'primaryColor': '#d32f2f', 'primaryTextColor': '#fff', 'primaryBorderColor': '#b71c1c', 'lineColor': '#ef5350', 'secondaryColor': '#1976d2', 'secondaryTextColor': '#fff', 'tertiaryColor': '#388e3c', 'tertiaryTextColor': '#fff'}}}%%
sequenceDiagram
participant A as 🎯 Attacker
participant N as 🌐 Network
participant D as 📱 Device
participant S as ⚙️ System
participant K as 🔒 Kernel
A->>N: 1. Send malicious packet
Note over N: Wi-Fi/Bluetooth/Cellular
N->>D: 2. Packet delivered
Note over D: ⚠️ Zero user interaction
D->>S: 3. process_system_packet()
Note over S: ❌ Missing validation
S->>S: 4. memcpy() overflow
S->>K: 5. Overwrite kernel memory
K->>K: 6. Execute shellcode
Note over K: 🚨 Full compromise
K-->>A: 7. Establish reverse shell
A->>K: 8. Execute commands
%%{init: {'theme': 'base', 'themeVariables': {'fontSize': '12px', 'primaryColor': '#c62828', 'primaryTextColor': '#fff'}}}%%
graph LR
A["1️⃣ Packet<br/>Crafting"] --> B["2️⃣ Network<br/>Transmission"]
B --> C["3️⃣ Device<br/>Reception"]
C --> D["4️⃣ System<br/>Processing"]
D --> E["5️⃣ Buffer<br/>Overflow"]
E --> F["6️⃣ Kernel<br/>Execution"]
F --> G["7️⃣ Full<br/>Compromise"]
style A fill:#ff5252,stroke:#d32f2f,color:#fff
style B fill:#ff6e40,stroke:#e64a19,color:#fff
style C fill:#ffb74d,stroke:#f57c00,color:#fff
style D fill:#ffa726,stroke:#f57f00,color:#fff
style E fill:#ffca28,stroke:#fbc02d,color:#333
style F fill:#ff7043,stroke:#e64a19,color:#fff
style G fill:#c62828,stroke:#b71c1c,color:#fff
%%{init: {'theme': 'base', 'themeVariables': {'fontSize': '11px'}}}}%%
graph TD
Start["🛡️ CVE-2025-48593<br/>Defense Strategy"]
subgraph Prevention["Prevention Layer"]
P1["✅ Security Patch<br/>November 2025"]
P2["🔌 Disable Unused<br/>Interfaces"]
P3["🛡️ Enable Play<br/>Protect"]
end
subgraph Detection["Detection Layer"]
D1["📊 Monitor<br/>Network Traffic"]
D2["📝 Track System<br/>Logs"]
D3["🔍 Deploy EDR/MDM"]
end
subgraph Response["Response Layer"]
R1["🚨 Isolate<br/>Devices"]
R2["⚡ Force Update"]
R3["🔬 Analyze<br/>Forensics"]
end
Start --> Prevention
Prevention --> Detection
Detection --> Response
P1 --> D1
P2 --> D2
P3 --> D3
D1 --> R1
D2 --> R2
D3 --> R3
style Start fill:#1565c0,stroke:#0d47a1,color:#fff
style P1 fill:#00897b,stroke:#004d40,color:#fff
style P2 fill:#00897b,stroke:#004d40,color:#fff
style P3 fill:#00897b,stroke:#004d40,color:#fff
style D1 fill:#f57f17,stroke:#e65100,color:#fff
style D2 fill:#f57f17,stroke:#e65100,color:#fff
style D3 fill:#f57f17,stroke:#e65100,color:#fff
style R1 fill:#d32f2f,stroke:#b71c1c,color:#fff
style R2 fill:#d32f2f,stroke:#b71c1c,color:#fff
style R3 fill:#d32f2f,stroke:#b71c1c,color:#fff