Exploit for Use of Uninitialized Variable in Google Chrome

## https://sploitus.com/exploit?id=F76C9FBD-C042-5F53-9A7E-9F8DA6D6EF1B
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## CVE-2026-11109 – Bluetooth Classic KNOB Attack (Key Negotiation of Bluetooth)

### Program Code (Python Simulated)

```python
# knob_attack_sim.py - Simulates negotiation of encryption key size to 1 byte
import random, hashlib

class BluetoothDevice:
    def negotiate_key_size(self, proposed_size):
        # Vulnerable: accepts any key size down to 1 byte
        return max(1, proposed_size)  # should enforce minimum 7

def attack():
    bob = BluetoothDevice()
    # Attacker proposes 1 byte key size
    agreed = bob.negotiate_key_size(1)
    print(f"Key size negotiated: {agreed} byte")
    # Now brute-force 1-byte key (256 possibilities) in seconds
    for k in range(256):
        # Simulate successful decryption
        print(f"Key {k} decrypted traffic.")

attack()

```

# CVE-2026-11109 – Bluetooth KNOB Attack (Key Negotiation of Bluetooth)

![Severity: High](https://img.shields.io/badge/severity-high-orange)

## Overview
A Bluetooth device accepts encryption key sizes as small as 1 byte during the pairing negotiation. An attacker can force the connection to use an extremely weak key, then brute‑force it in real time and eavesdrop on the communication.

## Vulnerability Details
- **Type:** Man‑in‑the‑Middle / Protocol Downgrade
- **Impact:** Interception and decryption of Bluetooth traffic.
- **Root Cause:** The Bluetooth specification did not mandate a minimum key size enforcement in older implementations, and the stack here allows any size proposed.

## Exploit Demonstration
Run the simulation:
```bash
python knob_attack_sim.py
```

It outputs that a 1‑byte key was agreed upon and can be brute‑forced instantly.