GitHub - Ashwesker/Blackash-CVE-2025-48593: CVE-2025-48593

🚨 CVE-2025-48593 Zero-Click Remote Code Execution in Android System 🚨

"A single malicious packet can own your device." — Android Security Team, Nov 2025

🎯 Vulnerability Snapshot

Attribute	Details
CVE ID	CVE-2025-48593
Severity	🔴 Critical (RCE, Zero-Click)
CVSS (Est.)	9.8 (Pending NVD confirmation)
Attack Vector	🌐 Network (Remote)
User Interaction	❌ None Required
Privileges Required	❌ None
Exploit Status	🟡 No public PoC (as of Nov 4, 2025)

🛡️ Affected Devices & Versions

- Android 13 (All builds Oct 2023 – Oct 2025)
- Android 14 (All builds Oct 2023 – Oct 2025)
- Android 15 (All builds up to Oct 2025)
! Android 16 (Builds Jul 2025 – Oct 2025)

Unpatched devices are fully exposed.

⚡ How It Works (Technical Breakdown)

// Simplified pseudocode of vulnerable path
void process_system_packet(Packet *p) {
    if (p->type == MALICIOUS_TYPE) {
        // ⚠️ No bounds check!
        memcpy(kernel_buffer, p->payload, p->size);  // CVE-2025-48593
        execute_payload(); // RCE achieved
    }
}

Root Cause:

Improper input validation in the System component allows remote attackers to overflow buffers and inject executable code.

🛑 Immediate Mitigation Steps

# 1. Check your patch level
adb shell getprop ro.build.version.security_patch
# → Should show: 2025-11-01 or 2025-11-05

User Actions

Update Now
⚙️ Settings → System → System Update
Enable Play Protect
🔍 Google Play → Play Protect → Scan
Avoid Untrusted Networks
🚫 Disable Wi-Fi/Bluetooth in public

Enterprise / OEM

Apply 2025-11-05 security patch via AOSP
Monitor: Android Security Bulletin – November 2025

🔗 Related CVEs (Same Bulletin)

CVE	Severity	Type	Affected
`CVE-2025-48581`	High	EoP	Android 16 only

📢 Stay Updated

🔍 NVD Entry: nvd.nist.gov/vuln/detail/CVE-2025-48593
🔗 Android Bulletin: source.android.com/security/bulletin
🛠️ AOSP Patch: Search CVE-2025-48593 in Android Git

🛠 CVE-2025-48593 Exploitation Schema

Zero-Click Remote Code Execution in Android System

%%{init: {'theme': 'base', 'themeVariables': { 'fontSize': '13px', 'fontFamily': 'Consolas, monospace', 'primaryColor': '#d32f2f', 'primaryTextColor': '#fff', 'lineColor': '#ff8a80', 'secondaryColor': '#1976d2'}}}%%
sequenceDiagram
    participant Attacker as 🌐 Attacker
    participant Network as 📡 Network
    participant Device as 📱 Android Device
    participant Kernel as 🛠 Kernel Space

    Attacker->>Network: Send Malicious Packet<br/>(No authentication)
    Network->>Device: Deliver Packet<br/>(Zero interaction)
    Device->>Device: process_system_packet(pkt)
    Note over Device: ⚠️ No bounds check!
    Device->>Kernel: memcpy(kernel_buffer, payload, size)
    Kernel-->>Device: Buffer Overflow
    Device->>Kernel: Execute Injected Code
    Kernel->>Attacker: Remote Shell / Data Exfiltration
    Note over Device,Kernel: 🔥 Full RCE Achieved

🔍 Technical Attack Chain

Stage	Action	Requirement
1. Packet Crafting	Attacker builds malformed system packet	None
2. Transmission	Sent over Wi-Fi, Bluetooth, or cellular	Network access
3. Reception	Device receives packet (no user action)	Unpatched Android 13–16
4. Processing	`System` component parses input	Vulnerable code path
5. Overflow	`memcpy()` writes beyond buffer	Input validation flaw
6. Execution	Shellcode runs in kernel context	Zero-click RCE
7. Persistence	Install malware, exfiltrate data, pivot	Full control

🛡️ Defense-in-Depth Schema

graph LR
    subgraph "Prevention Layers"
        P1[🔒 Apply Nov 2025 Patch]
        P2[🚫 Disable Unused Radios]
        P3[🛡️ Google Play Protect]
        P4[🌐 Avoid Public Wi-Fi]
    end

    subgraph "Detection"
        D1[📊 Monitor Anomalous Traffic]
        D2[⚠️ Watch for Kernel Crashes]
        D3[🔍 Endpoint Forensics]
    end

    subgraph "Response"
        R1[🛑 Isolate Device]
        R2[📲 Force OTA Update]
        R3[📋 Report to Google/OEM]
    end

    P1 & P2 & P3 & P4 --> D1 & D2 & D3 --> R1 & R2 & R3

    style P1 fill:#1b5e20, color:#fff
    style R1 fill:#b71c1c, color:#fff

📋 Patch Application Flow

%%{init: {'theme': 'neutral'}}%%
graph TD
    A[Google Releases Patch<br/>Nov 1/5, 2025] --> B{OEM Integration}
    B --> C[Samsung, OnePlus, etc.]
    B --> D[Google Pixel]
    C --> E[Monthly Security Update]
    D --> F[Pixel OTA Push]
    E & F --> G[User Installs Update]
    G --> H[Patch Level: 2025-11-01+]
    H --> I[✅ CVE-2025-48593 Mitigated]

    style A fill:#1976d2, color:#fff
    style I fill:#1b5e20, color:#fff
    style G fill:#ff9800, color:#fff

Unpatched = Exposed
Patched = Protected

Schema last updated: November 4, 2025
For AOSP patch diff, search CVE-2025-48593 in Android Git