CVE-2026-28821

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{"affected": [{"affectedData": [{"product": "macOS", "vendor": "Apple", "versions": [{"lessThan": "14.8.5", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "15.7.5", "status": "affected", "version": "0", "versionType": "custom"}, {"lessThan": "26.4", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "product-security@apple.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "D66288AF-23BD-407A-81F5-F1DFBF84C622", "versionEndExcluding": "14.8.5", "versionStartIncluding": "14.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "DD21D2C9-BBEC-4E8E-B8D2-C92B7E6155E1", "versionEndExcluding": "15.7.5", "versionStartIncluding": "15.0", "vulnerable": true}, {"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "6CF848CD-25D4-4371-BEF3-1ACCE47AD81F", "versionEndExcluding": "26.4", "versionStartIncluding": "26.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. An app may be able to gain elevated privileges."}, {"lang": "es", "value": "Exist\u00eda un problema de validaci\u00f3n en la verificaci\u00f3n de derechos. Este problema se abord\u00f3 con una validaci\u00f3n mejorada del derecho del proceso. Este problema est\u00e1 solucionado en macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4. Una aplicaci\u00f3n podr\u00eda obtener privilegios elevados."}], "id": "CVE-2026-28821", "lastModified": "2026-06-17T10:29:06.387", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 8.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-28821", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-03-26T03:55:29.069829Z", "version": "2.0.3"}}]}, "published": "2026-03-25T01:17:07.280", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126794"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126795"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126796"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,14.8.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,15.7.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "macOS", "source": "cna", "vendor": "Apple"}, "product": "macos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-03-26T15:42:26.451548+00:00", "value": {"mitigation_remediation": ["Update macOS to Sequoia\u202f15.7.5, Sonoma\u202f14.8.5, or Tahoe\u202f26.4 and later"], "summary": {"action": "Immediate Patch", "impact": "Privilege Escalation"}, "threat_synthesis": {"affected_systems": "Apple states that the vulnerability affects macOS releases prior to Sequoia\u202f15.7.5, Sonoma\u202f14.8.5, and Tahoe\u202f26.4. The affected systems are any macOS installations that have not been updated to these specific patch versions or later. The resolution is to install the latest available macOS update that includes the entitlement verification patch.", "description_and_impact": "A validation flaw exists in macOS's entitlement verification logic, which allows an application to potentially bypass required checks and obtain elevated privileges. The flaw was identified in the entitlement verification process and noted as an area where the system fails to properly confirm the rights of an app before allowing privileged operations. The fix introduces more rigorous validation to prevent apps from assuming higher-level entitlements than they are authorized for.", "risk_and_exploitability": "The CVSS score is 8.4, indicating a high severity threat, although the EPSS score is below 1\u202f% suggesting low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog. The likely attack vector is local privilege escalation, as the flaw is in entitlement checks performed during application execution. An attacker who can deliver a malicious app or otherwise invoke the vulnerable entitlement logic could gain elevated rights on the affected system."}}}}, "created": "2026-03-25T11:36:40.200443+00:00", "title": "Privilege Escalation via Entitlement Verification Bypass in macOS", "updated": "2026-03-27T09:53:47.638984+00:00", "vendors": ["apple", "apple$PRODUCT$macos"]}