CVE-2026-20699

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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": "26.3", "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": "0488A377-7971-4703-8823-05BF1E23CF48", "versionEndExcluding": "26.3", "versionStartIncluding": "26.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. This issue is fixed in macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. An app may be able to access user-sensitive data."}, {"lang": "es", "value": "Un problema de downgrade que afectaba a los ordenadores Mac basados en Intel se abord\u00f3 con restricciones adicionales de firma de c\u00f3digo. Este problema est\u00e1 solucionado en macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.3, macOS Tahoe 26.4. Una aplicaci\u00f3n podr\u00eda acceder a datos sensibles del usuario."}], "id": "CVE-2026-20699", "lastModified": "2026-06-17T10:17:43.300", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 6.2, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.5, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20699", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-03-25T15:50:17.447450Z", "version": "2.0.3"}}]}, "published": "2026-03-25T01:17:06.650", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126348"}, {"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": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,14.8.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,15.7.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}, {"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": "2026-03-25T19:37:08.097044+00:00", "value": {"mitigation_remediation": ["Apply the vendor patch by updating macOS to Sequoia 15.7.5, Sonoma 14.8.5, Tahoe 26.3, or Tahoe 26.4 (depending on your version).", "After updating, verify that no downgraded or unsigned applications are present and that code\u2011signing restrictions are enforced."], "summary": {"action": "Immediate Update", "impact": "Unauthorized Data Access"}, "threat_synthesis": {"affected_systems": "Apple macOS on Intel\u2011based machines is affected. The issue existed in earlier releases before the following updates: Sequoia 15.7.5, Sonoma 14.8.5, Tahoe 26.3, and Tahoe 26.4. Any version of macOS on Intel hardware before these releases may be vulnerable.", "description_and_impact": "This vulnerability is a downgrade flaw that allowed applications on Intel\u2011based Macs to bypass newer code\u2011signing restrictions, potentially enabling them to read user\u2011sensitive data. The flaw is tied to the CWE\u2011347 weakness, which concerns improper restriction of operations within real trusted functions. The primary consequence is unauthorized disclosure of confidential information from the affected system.", "risk_and_exploitability": "The CVSS score of 6.2 indicates a medium severity, and the EPSS of <1% suggests a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Likely exploitation requires the attacker to deploy a downgrade\u2011capable application on the target system, implying a local or privileged context; no remote code execution path is documented."}}}}, "created": "2026-03-25T11:36:38.365179+00:00", "title": "Downgrade Vulnerability Allowing Unauthorized Access to Sensitive Data on Intel-based Macs", "updated": "2026-03-25T20:56:19.918264+00:00", "vendors": ["apple", "apple$PRODUCT$macos"]}