CVE-2025-31985

# CVE-2025-31985 PoC Check Script # This script checks if the target URL is missing the X-Content-Type-Options header. import requests def check_vulnerability(url): try: response = requests.get(url, timeout=10) headers = response.headers print(f"[*] Checking headers for: {url}") if 'X-Content-Type-Options' in headers: print(f"[+] Found X-Content-Type-Options: {headers['X-Content-Type-Options']}") if headers['X-Content-Type-Options'].lower() != 'nosniff': print("[!] Warning: Header is present but not set to 'nosniff'. Vulnerability may exist.") else: print("[-] Header is correctly configured. Not vulnerable.") else: print("[!] Vulnerability Confirmed: 'X-Content-Type-Options' header is missing.") print("[!] Browsers may perform MIME-sniffing on this content.") except requests.RequestException as e: print(f"[Error] Could not connect to {url}: {e}") if __name__ == "__main__": target_url = "http://target-hcl-bigfix-server.com" check_vulnerability(target_url)

{"cve": {"id": "CVE-2025-31985", "sourceIdentifier": "[email protected]", "published": "2026-05-20T12:16:20.660", "lastModified": "2026-05-20T19:09:24.893", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "HCL BigFix Service Management (SM) is affected by a security misconfiguration due to a missing or insecure “X-Content-Type-Options” header. This could allow browsers to perform MIME-type sniffing, potentially causing malicious content to be interpreted and executed incorrectly."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 1.2, "impactScore": 2.5}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-200"}]}, {"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hcltech:bigfix_service_management:23.0:*:*:*:*:*:*:*", "matchCriteriaId": "4D915AC1-7C2B-497D-9A77-9726954B2282"}]}]}], "references": [{"url": "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0128144", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}