A structured exception handler buffer overflow exists in the logging functionality of AIDA64 Extreme 5.99.4900. A local attacker can supply a malicious CSV log file path that overflows the buffer when the application processes the Hardware Monitoring logging preferences, allowing injection of shellcode and execution of arbitrary code. This flaw gives the attacker the ability to run code with the privilege level of the affected user, potentially compromising confidentiality, integrity, and availability of the system.

The vulnerability affects AIDA64 AIDA64 Extreme version 5.99.4900. No other versions are listed as affected.

The CVSS score of 8.6 indicates a high severity impact, while the EPSS score of less than 1% suggests a low probability of exploitation at this time. The flaw is not included in the CISA KEV catalog, implying no known widespread exploitation. The attack vector is inferred to be local, requiring a malicious log file placed within the application's logging directory. Once the file is processed, the overflow triggers code execution, enabling the attacker to gain elevated privileges or control the application.