| Title | ATM Simulator Improper Input Validation in Financial Transactions v1 Improper Input Validation |
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| Description | The ATM Simulator fails to validate transaction amounts, allowing **negative values** in deposits and withdrawals. An attacker can exploit this to:
- **Deposit negative values** → Illegally reduce balance (acts as withdrawal).
- **Withdraw negative values** → Illegally inflate balance (acts as deposit).
- **Bypass financial logic**, leading to incorrect balance calculations.
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| Source | ⚠️ https://github.com/zzzxc643/cve/blob/main/ATM_Banking.md |
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| User | zzzxc (UID 81185) |
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| Submission | 04/16/2025 08:51 (1 Year ago) |
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| Moderation | 04/28/2025 08:49 (12 days later) |
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| Status | Accepted |
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| VulDB entry | 306402 [code-projects ATM Banking 1.0 moneyDeposit/moneyWithdraw logic error] |
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| Points | 19 |
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