CVE-2026-20629

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{"affected": [{"affectedData": [{"product": "macOS", "vendor": "Apple", "versions": [{"lessThan": "26.3", "status": "affected", "version": "0", "versionType": "custom"}]}], "source": "product-security@apple.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*", "matchCriteriaId": "E1EEEE88-5ADA-4C55-9C7C-397E904408DD", "versionEndExcluding": "26.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.3. An app may be able to access user-sensitive data."}, {"lang": "es", "value": "Se abord\u00f3 un problema de privacidad con un manejo mejorado de los archivos temporales. Este problema est\u00e1 solucionado en macOS Tahoe 26.3. Una aplicaci\u00f3n podr\u00eda acceder a datos sensibles del usuario."}], "id": "CVE-2026-20629", "lastModified": "2026-06-17T10:17:33.987", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20629", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-12T15:29:21.367739Z", "version": "2.0.3"}}]}, "published": "2026-02-11T23:16:06.417", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126348"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-922"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}], "product": "macos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-04-16T06:52:25.044390+00:00", "value": {"mitigation_remediation": ["Install macOS 26.3 or later to address the temporary file handling flaw.", "Ensure applications store sensitive data in secure, non\u2011temporary locations or use sandboxed temporary directories.", "Enable sandboxing or application protection features to restrict untrusted apps from accessing system temporary files."], "summary": {"action": "Apply Update", "impact": "Unauthorized access to user-sensitive data"}, "threat_synthesis": {"affected_systems": "Apple\u2019s macOS operating system, specifically versions of macOS Tahoe that precede 26.3, is affected. The flaw was addressed in the 26.3 update, so installations of 26.3 or newer are considered fixed.", "description_and_impact": "The vulnerability is a flaw in the handling of temporary files on macOS, allowing an application to read or write data that should have remained private. The issue is classified as an information exposure weakness (CWE\u2011922). An attacker could gain access to user\u2011sensitive information through a malicious or compromised app that manipulates temporary file creation or access. The impact is a breach of confidentiality, exposing data that users expect to be safeguarded.", "risk_and_exploitability": "The CVSS base score of 5.5 indicates a moderate severity. The EPSS score is very low (<1\u202f%), meaning the likelihood of exploitation in the wild is currently minimal, and the flaw is not listed in the CISA KEV catalog. Based on the description, the vulnerable code is accessed locally by apps that run on the system, so the attack surface is limited to local or malicious applications. An attacker would need to influence temporary file creation or access controls to exploit the flaw, making real\u2011world exploitation unlikely at present."}}}}, "created": "2026-02-12T09:02:08.534406+00:00", "title": "Improper Temporary File Handling Allows Sensitive Data Access in macOS Tahoe", "updated": "2026-04-16T07:00:10.984865+00:00", "vendors": ["apple", "apple$PRODUCT$macos"]}