{"affected":[{"affectedData":[{"product":"PAN-OS","vendor":"Palo Alto Networks","versions":[{"status":"unaffected","version":"10.1.*"},{"changes":[{"at":"8.1.19","status":"unaffected"}],"lessThan":"8.1.19","status":"affected","version":"8.1","versionType":"custom"},{"changes":[{"at":"9.0.14","status":"unaffected"}],"lessThan":"9.0.14","status":"affected","version":"9.0","versionType":"custom"},{"changes":[{"at":"10.0.4","status":"unaffected"}],"lessThan":"10.0.4","status":"affected","version":"10.0","versionType":"custom"},{"changes":[{"at":"9.1.10","status":"unaffected"}],"lessThan":"9.1.10","status":"affected","version":"9.1","versionType":"custom"}]}],"source":"psirt@paloaltonetworks.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*","matchCriteriaId":"186F919F-1EF1-4190-9852-2D64CF508E87","versionEndExcluding":"8.1.19","versionStartIncluding":"8.1.0","vulnerable":true},{"criteria":"cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*","matchCriteriaId":"E9EE274A-3AF1-4204-B43D-1EA54C6442CC","versionEndExcluding":"9.0.14","versionStartIncluding":"9.0.0","vulnerable":true},{"criteria":"cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*","matchCriteriaId":"6EED4206-00CC-449A-9681-612EC258CCEF","versionEndExcluding":"9.1.10","versionStartIncluding":"9.1.0","vulnerable":true},{"criteria":"cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*","matchCriteriaId":"5914FFE6-7B35-4593-8F06-8C059C920AEA","versionEndExcluding":"10.0.4","versionStartIncluding":"10.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"A cryptographically weak pseudo-random number generator (PRNG) is used during authentication to the Palo Alto Networks PAN-OS web interface. This enables an authenticated attacker, with the capability to observe their own authentication secrets over a long duration on the PAN-OS appliance, to impersonate another authenticated web interface administrator's session. This issue impacts: PAN-OS 8.1 versions earlier than PAN-OS 8.1.19; PAN-OS 9.0 versions earlier than PAN-OS 9.0.14; PAN-OS 9.1 versions earlier than PAN-OS 9.1.10; PAN-OS 10.0 versions earlier than PAN-OS 10.0.4. PAN-OS 10.1 versions are not impacted."},{"lang":"es","value":"Es usado un generador de números pseudoaleatorios (PRNG) débil desde el punto de vista criptográfico durante la autenticación en la interfaz web de PAN-OS de Palo Alto Networks. Esto permite a un atacante autenticado, con capacidad para observar sus propios secretos de autenticación durante un tiempo prolongado en el dispositivo PAN-OS, hacerse pasar por la sesión de otro administrador de la interfaz web autenticado. Este problema afecta a: PAN-OS versiones 8.1 anteriores a PAN-OS 8.1.19; PAN-OS versiones 9.0 anteriores a PAN-OS 9.0.14; PAN-OS versiones 9.1 anteriores a PAN-OS 9.1.10; PAN-OS versiones 10.0 anteriores a PAN-OS 10.0.4. PAN-OS versiones 10.1 no están afectadas"}],"id":"CVE-2021-3047","lastModified":"2026-06-17T04:04:37.667","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"LOW","cvssData":{"accessComplexity":"MEDIUM","accessVector":"NETWORK","authentication":"SINGLE","availabilityImpact":"NONE","baseScore":3.5,"confidentialityImpact":"NONE","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:M/Au:S/C:N/I:P/A:N","version":"2.0"},"exploitabilityScore":6.8,"impactScore":2.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.2,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"exploitabilityScore":1.6,"impactScore":2.5,"source":"psirt@paloaltonetworks.com","type":"Secondary"},{"cvssData":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.1,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"exploitabilityScore":1.6,"impactScore":1.4,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-08-11T17:15:07.523","references":[{"source":"psirt@paloaltonetworks.com","tags":["Vendor Advisory"],"url":"https://security.paloaltonetworks.com/CVE-2021-3047"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"url":"https://security.paloaltonetworks.com/CVE-2021-3047"}],"sourceIdentifier":"psirt@paloaltonetworks.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-338"}],"source":"psirt@paloaltonetworks.com","type":"Secondary"},{"description":[{"lang":"en","value":"CWE-338"}],"source":"nvd@nist.gov","type":"Primary"}]}