CVE-2025-20744

// CVE-2025-20744 PoC - MediaTek pda Use After Free // This PoC demonstrates the vulnerability concept (requires system privilege) #include <stdio.h> #include <stdlib.h> #include <string.h> // Simulated pda structure struct pda_object { void (*callback)(void); char data[256]; }; // Vulnerable function demonstrating use-after-free void trigger_vulnerability() { struct pda_object *obj = malloc(sizeof(struct pda_object)); if (obj == NULL) { printf("Memory allocation failed\n"); return; } // Initialize object obj->callback = NULL; memset(obj->data, 0, sizeof(obj->data)); // Simulate normal operation printf("PDA object initialized at %p\n", obj); // Free the object (UAF condition begins here) free(obj); // Use after free - accessing freed memory // In real scenario, attacker would manipulate heap layout printf("[VULNERABILITY] Accessing freed memory at %p\n", obj); printf("[VULNERABILITY] Callback pointer: %p\n", obj->callback); printf("[VULNERABILITY] Data: %s\n", obj->data); // Trigger privilege escalation via UAF if (obj->callback != NULL) { printf("[EXPLOIT] Calling callback to escalate privilege\n"); obj->callback(); } } int main() { printf("CVE-2025-20744 MediaTek pda Use After Free PoC\n"); printf("Requires system privilege to exploit\n\n"); trigger_vulnerability(); return 0; }

{"cve": {"id": "CVE-2025-20744", "sourceIdentifier": "[email protected]", "published": "2025-11-04T07:15:47.070", "lastModified": "2025-11-05T17:12:01.150", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In pda, there is a possible escalation of privilege due to use after free. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10127160; Issue ID: MSV-4542."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "baseScore": 4.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 0.8, "impactScore": 3.4}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L", "baseScore": 4.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 0.8, "impactScore": 3.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:google:android:13.0:*:*:*:*:*:*:*", "matchCriteriaId": "879FFD0C-9B38-4CAA-B057-1086D794D469"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:14.0:*:*:*:*:*:*:*", "matchCriteriaId": "2700BCC5-634D-4EC6-AB67-5B678D5F951D"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:15.0:*:*:*:*:*:*:*", "matchCriteriaId": "8538774C-906D-4B03-A3E7-FA7A55E0DA9E"}, {"vulnerable": true, "criteria": "cpe:2.3:o:google:android:16.0:*:*:*:*:*:*:*", "matchCriteriaId": "2D49E611-5D53-479D-A981-42388FDC0E8D"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6E9F80F-9AC9-41E0-BB14-9DB6F14B62CD"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*", "matchCriteriaId": "CBBB30DF-E963-4940-B742-F6801F68C3FC"}, {"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt8793:-:*:*:*:*:*:*:*", "matchCriteriaId": "2FBD3487-F8CE-406C-8BD7-DD57FF8CD60B"}]}]}], "references": [{"url": "https://corp.mediatek.com/product-security-bulletin/November-2025", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}