CVE-2026-58085

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{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-58085", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-27T16:03:08.946942Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-27T16:02:38.591Z"}}], "cna": {"title": "Missing MAC validation in wg(4) packet decryption", "credits": [{"lang": "en", "type": "finder", "value": "Reo Shiseki"}], "affected": [{"vendor": "FreeBSD", "modules": ["if_wg"], "product": "FreeBSD", "versions": [{"status": "affected", "version": "15.1-RELEASE", "lessThan": "p2", "versionType": "release"}, {"status": "affected", "version": "15.0-RELEASE", "lessThan": "p12", "versionType": "release"}, {"status": "affected", "version": "14.4-RELEASE", "lessThan": "p8", "versionType": "release"}], "defaultStatus": "unknown"}], "datePublic": "2026-07-29T22:40:00.000Z", "references": [{"url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:52.if_wg.asc", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "After dispatching a decrypt operation to OCF and receiving the result, the wg(4) driver failed to check whether the MAC verification step succeeded. The driver thus silently accepted packets with an invalid Poly1305 authentication tag.\n\nA remote attacker who can send UDP packets to a WireGuard endpoint, and who can guess the bounds of the receiver's replay window, can inject forged or modified transport data packets into the tunnel.\n\nA remote attacker who can intercept WireGuard packets bound for a FreeBSD host can modify the ciphertext and authenticated data without detection by the receiver."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-347", "description": "CWE-347: Improper Verification of Cryptographic Signature"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-08-19T07:38:50.551Z"}}}, "cveMetadata": {"cveId": "CVE-2026-58085", "state": "PUBLISHED", "dateUpdated": "2026-08-27T16:03:35.550Z", "dateReserved": "2026-06-29T01:40:17.498Z", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "datePublished": "2026-08-19T07:38:50.551Z", "assignerShortName": "freebsd"}, "dataVersion": "5.2"}

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The driver thus silently accepted packets with an invalid Poly1305 authentication tag.\n\nA remote attacker who can send UDP packets to a WireGuard endpoint, and who can guess the bounds of the receiver's replay window, can inject forged or modified transport data packets into the tunnel.\n\nA remote attacker who can intercept WireGuard packets bound for a FreeBSD host can modify the ciphertext and authenticated data without detection by the receiver."}, {"lang": "es", "value": "Despu\u00e9s de enviar una operaci\u00f3n de descifrado a OCF y recibir el resultado, el controlador wg(4) no verific\u00f3 si el paso de verificaci\u00f3n MAC tuvo \u00e9xito. El controlador, por lo tanto, acept\u00f3 silenciosamente paquetes con una etiqueta de autenticaci\u00f3n Poly1305 inv\u00e1lida.\n\nUn atacante remoto que puede enviar paquetes UDP a un punto final de WireGuard, y que puede adivinar los l\u00edmites de la ventana de reproducci\u00f3n del receptor, puede inyectar paquetes de datos de transporte falsificados o modificados en el t\u00fanel.\n\nUn atacante remoto que puede interceptar paquetes WireGuard destinados a un host FreeBSD puede modificar el texto cifrado y los datos autenticados sin ser detectado por el receptor."}], "id": "CVE-2026-58085", "lastModified": "2026-10-27T12:10:00.343", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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-2026-58085", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-27T16:03:08.946942Z", "version": "2.0.3"}}]}, "published": "2026-08-19T08:17:12.673", "references": [{"source": "secteam@freebsd.org", "tags": ["Vendor Advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:52.if_wg.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.1-RELEASE,p2)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p12)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[14.4-RELEASE,p8)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "created": "2026-08-19T13:15:04.453251+00:00", "updated": "2026-08-27T19:15:03.663914+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}