CVE-2025-61748

# CVE-2025-61748 PoC - Oracle Java SE Libraries Integrity Impact # This PoC demonstrates a conceptual exploit for the data integrity vulnerability # in Oracle Java SE Libraries component (affected versions: 21.0.8, 25) import java.lang.reflect.*; import java.util.*; public class CVE_2025_61748_PoC { // Simulate vulnerable library API that lacks proper authorization checks public static class VulnerableLibrary { private Map<String, String> dataStore = new HashMap<>(); // Vulnerable method: allows unauthorized data modification public void updateEntry(String key, String value) { // Missing authentication/authorization check // This allows unauthenticated attackers to modify data dataStore.put(key, value); System.out.println("[VULN] Entry updated: " + key + " = " + value); } public void deleteEntry(String key) { // Missing authorization check dataStore.remove(key); System.out.println("[VULN] Entry deleted: " + key); } public void insertEntry(String key, String value) { // Missing authorization check dataStore.putIfAbsent(key, value); System.out.println("[VULN] Entry inserted: " + key + " = " + value); } public Map<String, String> getAllEntries() { return new HashMap<>(dataStore); } } public static void main(String[] args) throws Exception { System.out.println("[*] CVE-2025-61748 - Oracle Java SE Libraries Integrity Vulnerability PoC"); System.out.println("[*] Affected: Oracle Java SE 21.0.8, 25"); System.out.println("[*] CVSS 3.1 Score: 3.7 (LOW)"); System.out.println(); VulnerableLibrary lib = new VulnerableLibrary(); // Step 1: Initialize with legitimate data System.out.println("[+] Initializing data store with legitimate entries..."); lib.insertEntry("user1", "legitimate_data_1"); lib.insertEntry("user2", "legitimate_data_2"); // Step 2: Simulate unauthenticated network attack System.out.println("\n[!] Simulating unauthenticated network attack..."); System.out.println("[!] Attack vector: Network (AV:N)"); System.out.println("[!] No authentication required (PR:N)"); System.out.println("[!] No user interaction required (UI:N)"); // Step 3: Exploit - unauthorized data modification System.out.println("\n[*] Exploiting integrity vulnerability..."); lib.updateEntry("user1", "MALICIOUS_DATA_INJECTED"); lib.deleteEntry("user2"); lib.insertEntry("attacker_key", "attacker_controlled_value"); // Step 4: Verify the unauthorized modifications System.out.println("\n[+] Verifying unauthorized modifications:"); Map<String, String> result = lib.getAllEntries(); for (Map.Entry<String, String> entry : result.entrySet()) { System.out.println(" " + entry.getKey() + " = " + entry.getValue()); } System.out.println("\n[!] Vulnerability successfully exploited!"); System.out.println("[!] Data integrity has been compromised."); System.out.println("[*] Remediation: Update to Oracle Java SE patched version per CPU Oct 2025"); } }

{"cve": {"id": "CVE-2025-61748", "sourceIdentifier": "[email protected]", "published": "2025-10-21T20:20:51.057", "lastModified": "2026-05-12T13:17:23.393", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Libraries). Supported versions that are affected are Oracle Java SE: 21.0.8 and 25; Oracle GraalVM for JDK: 21.0.8; Oracle GraalVM Enterprise Edition: 21.3.15. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. CVSS 3.1 Base Score 3.7 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 3.7, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.2, "impactScore": 1.4}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-284"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:oracle:graalvm:21.3.15:*:*:*:enterprise:*:*:*", "matchCriteriaId": "37490B26-61B5-49DF-8A7C-47518473BBC1"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:graalvm_for_jdk:21.0.8:*:*:*:*:*:*:*", "matchCriteriaId": "29154F4D-88E2-43FA-9DDA-1DEF5F588A31"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:jdk:21.0.8:*:*:*:*:*:*:*", "matchCriteriaId": "280B946E-65E7-40E7-93AE-C9FF37FF0CC4"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:jdk:25:*:*:*:*:*:*:*", "matchCriteriaId": "9007EF86-9404-4D14-BE09-5859DD63D41F"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:jre:21.0.8:*:*:*:*:*:*:*", "matchCriteriaId": "A708A66E-E203-4222-93F6-645436098581"}, {"vulnerable": true, "criteria": "cpe:2.3:a:oracle:jre:25:*:*:*:*:*:*:*", "matchCriteriaId": "2AD56177-F003-4CB2-8E77-4942AC6F4911"}]}]}], "references": [{"url": "https://www.oracle.com/security-alerts/cpuoct2025.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-032379.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}]}}