CVE-2025-43376

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This issue is fixed in Safari 26, iOS 18.7.7 and iPadOS 18.7.7, iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. A remote attacker may be able to view leaked DNS queries with Private Relay turned on."}, {"lang": "es", "value": "Se abord\u00f3 un problema l\u00f3gico con una gesti\u00f3n de estado mejorada. Este problema est\u00e1 solucionado en Safari 26, tvOS 26, watchOS 26, iOS 26 y iPadOS 26, visionOS 26. Un atacante remoto podr\u00eda ver consultas DNS filtradas con Retransmisi\u00f3n Privada activada."}], "id": "CVE-2025-43376", "lastModified": "2026-10-18T21:10:00.120", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-43376", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-12-10T20:46:51.589683Z", "version": "2.0.3"}}]}, "published": "2025-11-04T02:15:44.710", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/125108"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/125110"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/125113"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/125114"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/125115"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/125116"}, {"source": "product-security@apple.com", "url": "https://support.apple.com/en-us/126793"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-27T23:21:00.354251+00:00", "value": {"mitigation_remediation": ["Upgrade to Safari 26 and to the corresponding iOS, iPadOS, macOS, tvOS, visionOS, or watchOS version that incorporates the fix (iOS 18.7.7 or 26, iPadOS 18.7.7 or 26, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26).", "If a patch update cannot be applied immediately, disable Private Relay on affected devices until the fix is installed to remove the trigger for the logic flaw.", "Monitor network traffic for anomalous DNS query patterns that might indicate exploitation attempts and review device logs for unexpected query exposure."], "summary": {"action": "Immediate Patch", "impact": "Information disclosure via leaked DNS queries when Private Relay is enabled"}, "threat_synthesis": {"affected_systems": "Apple Safari, iOS 18.7.7 and 26, iPadOS 18.7.7 and 26, macOS Tahoe 26, tvOS 26, visionOS 26, and watchOS 26 are affected. These versions have been patched to prevent the leakage of DNS queries via Private Relay.", "description_and_impact": "This vulnerability arises from a logic flaw in state management that allows a remote attacker to view DNS queries embedded in traffic when Private Relay is turned on. The flaw enables exposure of the DNS queries an end\u2011user issued, thereby leaking location or request details that should be confidential. The official description states that the logic issue was addressed with improved state management and that the bug is fixed in later releases of Safari and several Apple operating systems.", "risk_and_exploitability": "The CVSS score of 7.5 indicates a high severity but the EPSS score of < 1% suggests that exploitation in the wild is unlikely as of this analysis. The vulnerability is not listed in CISA\u2019s KEV catalog. The likely attack vector is remote, requiring the victim to use Private Relay and a malicious resource that triggers the logic flaw; many of the steps to exploit it are unspecified, so the exact method is inferred rather than explicitly documented."}}}}, "created": "2025-11-04T16:34:16.392786+00:00", "title": "Leakage of DNS Queries via Private Relay in Apple Safari and Operating Systems", "updated": "2026-04-27T23:30:15.499662+00:00", "vendors": ["apple", "apple$PRODUCT$ios", "apple$PRODUCT$ipados", "apple$PRODUCT$safari", "apple$PRODUCT$tvos", "apple$PRODUCT$visionos", "apple$PRODUCT$watchos"], "weaknesses": ["CWE-200"]}