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**Name of the Vulnerable Software and Affected Versions** Apache HTTP Server versions 2.4.0 through 2.4.67 **Description** A heap-based buffer overflow occurs when interacting with malicious backend servers using `ProxyPassReverseCookie*`. A heap-based buffer overflow is a memory corruption issue where data exceeds the allocated boundary of a buffer on the heap, potentially leading to crashes or arbitrary code execution. **Recommendations** Upgrade to version 2.4.68.