CVE-2026-20671

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This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. An attacker in a privileged network position may be able to intercept network traffic."}, {"lang": "es", "value": "Un problema de l\u00f3gica se solucion\u00f3 con comprobaciones mejoradas. Este problema est\u00e1 solucionado en watchOS 26.3, tvOS 26.3, macOS Tahoe 26.3, macOS Sonoma 14.8.4, macOS Sequoia 15.7.4, iOS 18.7.5 y iPadOS 18.7.5, visionOS 26.3, iOS 26.3 y iPadOS 26.3. Un atacante en una posici\u00f3n de red privilegiada podr\u00eda interceptar el tr\u00e1fico de red."}], "id": "CVE-2026-20671", "lastModified": "2026-06-17T10:17:39.913", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20671", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-02-12T16:17:10.601753Z", "version": "2.0.3"}}]}, "published": "2026-02-11T23:16:09.317", "references": [{"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126346"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126347"}, {"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/126349"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126350"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126351"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126352"}, {"source": "product-security@apple.com", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://support.apple.com/en-us/126353"}], "sourceIdentifier": "product-security@apple.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,26.3)"}}], "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,18.7)"}}], "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,26.3)"}}], "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,15.7)"}}], "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,14.8)"}}], "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,26.3)"}}], "product": "tvos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,26.3)"}}], "product": "visionos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[unspecified,26.3)"}}], "product": "watchos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-04-16T01:00:39.848684+00:00", "value": {"mitigation_remediation": ["Apply the latest OS updates that contain the fix\u2014install iOS 18.7.5 or later, iPadOS 18.7.5 or later, macOS Sequoia 15.7.4 or later, macOS Sonoma 14.8.4 or later, macOS Tahoe 26.3 or later, tvOS 26.3 or later, visionOS 26.3 or later, and watchOS 26.3 or later.", "Place devices in a network zone that does not provide privileged network access to potential attackers, or apply strict network segmentation to isolate them.", "Enable and enforce secure transport protocols such as TLS for all network communications to reduce the impact if traffic is intercepted."], "summary": {"action": "Immediate Patch", "impact": "Network Traffic Interception"}, "threat_synthesis": {"affected_systems": "Apple\u2019s iOS, iPadOS, macOS, tvOS, visionOS, and watchOS devices are affected. The flaw exists in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, and watchOS 26.3. Devices running earlier releases of these OSes are also vulnerable.", "description_and_impact": "This vulnerability is a logic flaw in Apple\u2019s operating systems that can allow an attacker situated on a privileged network segment to intercept network traffic. The flaw is not a code\u2011execution bug but rather a weakness in how the OS validates certain network operations, classified as CWE\u201177. If exploited, the attacker could eavesdrop on traffic between the device and external endpoints, potentially exposing sensitive data transmitted over unencrypted channels.", "risk_and_exploitability": "The CVSS base score of 3.1 signals a low\u2011to\u2011moderate severity, while the EPSS of less than 1\u202f% indicates that exploitation in the wild would be uncommon. The vulnerability is not listed in CISA\u2019s KEV catalog, further implying that widespread use has not been observed. Exploitation requires the attacker to have privileged access on the network in which the device resides, after which the attacker can intercept traffic, but it does not grant code execution or full device control."}}}}, "created": "2026-02-12T09:03:03.036498+00:00", "updated": "2026-04-16T01:15:20.514827+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$tvos", "apple$PRODUCT$visionos", "apple$PRODUCT$watchos"]}