The issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.7.3, macOS Sonoma 14.8.3, macOS Tahoe 26.2. An app may be able to cause a denial-of-service.
The following code is for security research and authorized testing only.
python
// CVE-2025-43482 PoC - macOS Input Validation DoS
// This PoC demonstrates the input validation issue in affected macOS versions
// Run with low privilege user to trigger DoS condition
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Simulated vulnerable input processing function
void process_input(char* user_input, size_t len) {
// Vulnerable: Insufficient input validation
// In real scenario, this would be in macOS system component
char* buffer = malloc(len + 1);
if (buffer == NULL) {
return;
}
// Missing proper bounds checking and input validation
memcpy(buffer, user_input, len);
buffer[len] = '\0';
// Process the input without proper validation
// This can lead to resource exhaustion or crash
printf("Processing input: %s\n", buffer);
free(buffer);
}
int main() {
// Crafted input that triggers the vulnerability
// In real exploitation, specific malformed data would be sent
// to vulnerable macOS component via IPC or system call
char* malicious_input = "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA";
size_t len = strlen(malicious_input);
printf("Triggering CVE-2025-43482 vulnerability...\n");
process_input(malicious_input, len);
return 0;
}