CVE-2026-28822

/* * PoC for CVE-2026-28822 (Type Confusion Simulation) * This code simulates a type confusion scenario leading to a crash. * Compile: gcc -o poc_cve2026_28822 poc_cve2026_28822.c */ #include <stdio.h> #include <stdlib.h> #include <string.h> // Define two different structures with size relationship to facilitate confusion typedef struct { char id[4]; void (*func_ptr)(void); } SafeObject; typedef struct { char data[16]; } MaliciousObject; // Function representing legitimate operations void legitimate_function() { printf("Executing legitimate function.\n"); } // Function representing the crash/exploit payload void payload_function() { printf("[!] Type confusion triggered! Executing unexpected code path.\n"); // Simulate application termination/crash abort(); } int main() { printf("[*] Starting PoC for CVE-2026-28822...\n"); // 1. Allocate an object of SafeObject and initialize it SafeObject *safe_obj = (SafeObject *)malloc(sizeof(SafeObject)); safe_obj->func_ptr = legitimate_function; printf("[*] SafeObject created. Function pointer: %p\n", safe_obj->func_ptr); // 2. Simulate the vulnerability: Reinterpret the memory as MaliciousObject // In a real scenario, this might happen due to a casting bug or buffer overflow MaliciousObject *malicious_obj = (MaliciousObject *)safe_obj; // 3. Corrupt the memory space overlapping with the function pointer // Overwriting the 'func_ptr' of SafeObject with data from MaliciousObject memset(malicious_obj->data, 0x41, 16); // For demonstration, we forcefully change the pointer to our payload // to simulate the result of the confusion logic safe_obj->func_ptr = payload_function; printf("[*] Memory corrupted via type confusion.\n"); printf("[*] Attempting to call the function pointer...\n"); // 4. Trigger the vulnerability if (safe_obj->func_ptr != NULL) { safe_obj->func_ptr(); } free(safe_obj); return 0; }

{"cve": {"id": "CVE-2026-28822", "sourceIdentifier": "[email protected]", "published": "2026-03-25T01:17:07.383", "lastModified": "2026-03-25T20:52:42.953", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "A type confusion issue was addressed with improved memory handling. This issue is fixed in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. An attacker may be able to cause unexpected app termination."}, {"lang": "es", "value": "Un problema de confusión de tipos se abordó con una gestión de memoria mejorada. Este problema está solucionado en iOS 26.4 y iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. Un atacante podría ser capaz de causar la terminación inesperada de una aplicación."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-843"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.4", "matchCriteriaId": "F813DB63-2B55-4E0B-9073-5465C65F69D6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.4", "matchCriteriaId": "01612D13-BE5B-43F8-B53E-5BF57F2A5B0C"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.5", "matchCriteriaId": "D66288AF-23BD-407A-81F5-F1DFBF84C622"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "15.0", "versionEndExcluding": "15.7.5", "matchCriteriaId": "DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.4", "matchCriteriaId": "6CF848CD-25D4-4371-BEF3-1ACCE47AD81F"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.4", "matchCriteriaId": "A906E2B7-B83B-4AD0-B00F-BEDEF2EDB844"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.4", "matchCriteriaId": "113B9705-BFF0-4357-B1AB-F57052F32361"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*", "versionEndExcluding": "26.4", "matchCriteriaId": "F6EAF0A5-7CFF-4EF6-9BC7-DB25B213F753"}]}]}], "references": [{"url": "https://support.apple.com/en-us/126792", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126794", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126795", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126796", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126797", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126798", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126799", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}