CVE-2025-43390

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{}

{"analysis": {"en": {"generated_at": "2026-04-28T10:25:17.522825+00:00", "value": {"mitigation_remediation": ["Upgrade macOS to Sequoia\u202f15.7.2 or Tahoe\u202f26.1 to apply the code\u2011signing fix", "Remove or disable legacy unsigned or unsigned applications that may trigger downgrade conditions", "Verify that all third\u2011party applications are signed by trusted developers before installation"], "summary": {"action": "Update OS", "impact": "Potential data disclosure through a downgrade attack"}, "threat_synthesis": {"affected_systems": "The issue affects macOS running on Intel processors. The flaw is fixed in macOS Sequoia\u202f15.7.2 and macOS Tahoe\u202f26.1. All Intel\u2011based Mac systems that have not installed these updates, or any earlier release, remain potentially vulnerable; newer Apple silicon Macs are not affected.", "description_and_impact": "A downgrade vulnerability that targets Intel\u2011based Macs allows a malicious or compromised application to bypass recent code\u2011signing restrictions added by Apple. By exploiting the flaw, the application can read user\u2011sensitive data that should otherwise be protected. The weakness is identified as CWE\u2011347, a downgrade flaw typical of improper validation of system components or certificates.", "risk_and_exploitability": "The CVSS score of 5.5 indicates moderate severity. EPSS is reported at less than\u202f1\u202f%, implying a low risk of exploitation in the wild, and the vulnerability is not listed in CISA\u2019s KEV catalog. The likely attack vector is local execution by a malicious or compromised app on an Intel Mac; once the downgrade exploit succeeds, an attacker can gain unauthorized read access to protected data."}}}}, "created": "2025-11-04T16:33:17.369693+00:00", "title": "Downgrade Vulnerability Enabling Local Data Disclosure on Intel Macs", "updated": "2026-04-28T10:30:29.019996+00:00", "vendors": ["apple", "apple$PRODUCT$macos", "apple$PRODUCT$macos_sequoia"]}