Vulnerability Details CVE-2019-9518
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.016
EPSS Ranking 80.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.8
Products affected by CVE-2019-9518
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cpe:2.3:a:apache:traffic_server:6.0.0
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cpe:2.3:a:apache:traffic_server:6.0.3
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cpe:2.3:a:apache:traffic_server:6.1.0
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cpe:2.3:a:apache:traffic_server:6.1.1
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cpe:2.3:a:apache:traffic_server:6.2.0
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cpe:2.3:a:apache:traffic_server:6.2.1
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cpe:2.3:a:apache:traffic_server:6.2.2
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cpe:2.3:a:apache:traffic_server:6.2.3
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cpe:2.3:a:apache:traffic_server:7.0.0
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cpe:2.3:a:apache:traffic_server:7.1.0
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cpe:2.3:a:apache:traffic_server:7.1.1
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cpe:2.3:a:apache:traffic_server:7.1.2
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cpe:2.3:a:apache:traffic_server:7.1.3
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cpe:2.3:a:apache:traffic_server:7.1.4
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cpe:2.3:a:apache:traffic_server:7.1.5
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cpe:2.3:a:apache:traffic_server:7.1.6
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cpe:2.3:a:apache:traffic_server:8.0.0
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cpe:2.3:a:apache:traffic_server:8.0.1
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cpe:2.3:a:apache:traffic_server:8.0.2
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cpe:2.3:a:apache:traffic_server:8.0.3
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cpe:2.3:a:apple:swiftnio:1.0.0
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cpe:2.3:a:apple:swiftnio:1.0.1
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cpe:2.3:a:apple:swiftnio:1.1.0
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cpe:2.3:a:apple:swiftnio:1.1.1
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cpe:2.3:a:apple:swiftnio:1.2.0
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cpe:2.3:a:apple:swiftnio:1.2.1
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cpe:2.3:a:apple:swiftnio:1.2.2
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cpe:2.3:a:apple:swiftnio:1.3.0
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cpe:2.3:a:apple:swiftnio:1.3.1
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cpe:2.3:a:apple:swiftnio:1.3.2
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cpe:2.3:a:apple:swiftnio:1.4.0
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cpe:2.3:a:mcafee:web_gateway:7.7.2.0
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cpe:2.3:a:mcafee:web_gateway:7.7.2.1
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cpe:2.3:a:mcafee:web_gateway:7.7.2.10
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cpe:2.3:a:mcafee:web_gateway:7.7.2.11
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cpe:2.3:a:mcafee:web_gateway:7.7.2.12
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cpe:2.3:a:mcafee:web_gateway:7.7.2.13
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cpe:2.3:a:mcafee:web_gateway:7.7.2.14
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cpe:2.3:a:mcafee:web_gateway:7.7.2.15
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cpe:2.3:a:mcafee:web_gateway:7.7.2.16
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cpe:2.3:a:mcafee:web_gateway:7.7.2.17
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cpe:2.3:a:mcafee:web_gateway:7.7.2.18
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cpe:2.3:a:mcafee:web_gateway:7.7.2.19
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cpe:2.3:a:mcafee:web_gateway:7.7.2.2
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cpe:2.3:a:mcafee:web_gateway:7.7.2.20
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cpe:2.3:a:mcafee:web_gateway:7.7.2.21
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cpe:2.3:a:mcafee:web_gateway:7.7.2.22
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cpe:2.3:a:mcafee:web_gateway:7.7.2.23
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cpe:2.3:a:mcafee:web_gateway:7.7.2.3
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cpe:2.3:a:mcafee:web_gateway:7.7.2.4
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cpe:2.3:a:mcafee:web_gateway:7.7.2.5
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cpe:2.3:a:mcafee:web_gateway:7.7.2.6
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cpe:2.3:a:mcafee:web_gateway:7.7.2.7
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cpe:2.3:a:mcafee:web_gateway:7.7.2.8
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cpe:2.3:a:mcafee:web_gateway:7.7.2.9
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cpe:2.3:a:mcafee:web_gateway:7.8.2.0
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cpe:2.3:a:mcafee:web_gateway:7.8.2.1
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cpe:2.3:a:mcafee:web_gateway:7.8.2.10
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cpe:2.3:a:mcafee:web_gateway:7.8.2.11
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cpe:2.3:a:mcafee:web_gateway:7.8.2.12
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cpe:2.3:a:mcafee:web_gateway:7.8.2.2
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cpe:2.3:a:mcafee:web_gateway:7.8.2.3
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cpe:2.3:a:mcafee:web_gateway:7.8.2.4
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cpe:2.3:a:mcafee:web_gateway:7.8.2.5
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cpe:2.3:a:mcafee:web_gateway:7.8.2.6
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cpe:2.3:a:mcafee:web_gateway:7.8.2.7
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cpe:2.3:a:mcafee:web_gateway:7.8.2.8
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cpe:2.3:a:mcafee:web_gateway:7.8.2.9
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cpe:2.3:a:mcafee:web_gateway:8.1.0
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cpe:2.3:a:mcafee:web_gateway:8.1.1
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cpe:2.3:a:mcafee:web_gateway:8.1.2
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cpe:2.3:a:mcafee:web_gateway:8.1.3
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cpe:2.3:a:mcafee:web_gateway:8.1.4
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cpe:2.3:a:mcafee:web_gateway:8.1.5
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cpe:2.3:a:nodejs:node.js:10.0.0
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cpe:2.3:a:nodejs:node.js:10.1.0
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cpe:2.3:a:nodejs:node.js:10.10.0
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cpe:2.3:a:nodejs:node.js:10.11.0
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cpe:2.3:a:nodejs:node.js:10.12.0
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cpe:2.3:a:nodejs:node.js:10.13.0
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cpe:2.3:a:nodejs:node.js:10.14.0
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cpe:2.3:a:nodejs:node.js:10.14.1
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cpe:2.3:a:nodejs:node.js:10.14.2
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cpe:2.3:a:nodejs:node.js:10.15.0
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cpe:2.3:a:nodejs:node.js:10.15.1
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cpe:2.3:a:nodejs:node.js:10.15.2
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cpe:2.3:a:nodejs:node.js:10.15.3
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cpe:2.3:a:nodejs:node.js:10.16.0
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cpe:2.3:a:nodejs:node.js:10.16.1
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cpe:2.3:a:nodejs:node.js:10.16.2
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cpe:2.3:a:nodejs:node.js:10.2.0
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cpe:2.3:a:nodejs:node.js:10.2.1
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cpe:2.3:a:nodejs:node.js:10.3.0
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cpe:2.3:a:nodejs:node.js:10.4.0
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cpe:2.3:a:nodejs:node.js:10.4.1
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cpe:2.3:a:nodejs:node.js:10.5.0
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cpe:2.3:a:nodejs:node.js:10.6.0
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cpe:2.3:a:nodejs:node.js:10.7.0
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cpe:2.3:a:nodejs:node.js:10.8.0
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cpe:2.3:a:nodejs:node.js:10.9.0
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cpe:2.3:a:nodejs:node.js:12.0.0
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cpe:2.3:a:nodejs:node.js:12.1.0
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cpe:2.3:a:nodejs:node.js:12.2.0
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cpe:2.3:a:nodejs:node.js:12.3.0
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cpe:2.3:a:nodejs:node.js:12.3.1
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cpe:2.3:a:nodejs:node.js:12.4.0
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cpe:2.3:a:nodejs:node.js:12.5.0
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cpe:2.3:a:nodejs:node.js:12.6.0
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cpe:2.3:a:nodejs:node.js:12.7.0
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cpe:2.3:a:nodejs:node.js:12.8.0
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cpe:2.3:a:nodejs:node.js:8.0.0
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cpe:2.3:a:nodejs:node.js:8.1.0
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cpe:2.3:a:nodejs:node.js:8.1.1
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cpe:2.3:a:nodejs:node.js:8.1.2
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cpe:2.3:a:nodejs:node.js:8.1.3
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cpe:2.3:a:nodejs:node.js:8.1.4
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cpe:2.3:a:nodejs:node.js:8.10.0
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cpe:2.3:a:nodejs:node.js:8.11.0
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cpe:2.3:a:nodejs:node.js:8.11.1
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cpe:2.3:a:nodejs:node.js:8.11.2
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cpe:2.3:a:nodejs:node.js:8.11.3
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cpe:2.3:a:nodejs:node.js:8.11.4
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cpe:2.3:a:nodejs:node.js:8.12.0
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cpe:2.3:a:nodejs:node.js:8.13.0
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cpe:2.3:a:nodejs:node.js:8.14.0
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cpe:2.3:a:nodejs:node.js:8.14.1
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cpe:2.3:a:nodejs:node.js:8.15.0
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cpe:2.3:a:nodejs:node.js:8.15.1
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cpe:2.3:a:nodejs:node.js:8.16.0
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cpe:2.3:a:nodejs:node.js:8.2.0
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cpe:2.3:a:nodejs:node.js:8.2.1
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cpe:2.3:a:nodejs:node.js:8.3.0
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cpe:2.3:a:nodejs:node.js:8.4.0
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cpe:2.3:a:nodejs:node.js:8.5.0
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cpe:2.3:a:nodejs:node.js:8.6.0
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cpe:2.3:a:nodejs:node.js:8.7.0
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cpe:2.3:a:nodejs:node.js:8.8.0
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cpe:2.3:a:nodejs:node.js:8.8.1
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cpe:2.3:a:nodejs:node.js:8.9.0
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cpe:2.3:a:nodejs:node.js:8.9.1
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cpe:2.3:a:nodejs:node.js:8.9.2
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cpe:2.3:a:nodejs:node.js:8.9.3
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cpe:2.3:a:nodejs:node.js:8.9.4
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cpe:2.3:a:oracle:graalvm:19.2.0
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cpe:2.3:a:redhat:jboss_core_services:1.0
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cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2.0
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cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3.0
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cpe:2.3:a:redhat:openshift_service_mesh:1.0
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cpe:2.3:a:redhat:quay:3.0.0
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cpe:2.3:a:redhat:software_collections:1.0
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cpe:2.3:a:synology:skynas:-
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cpe:2.3:h:synology:vs960hd:-
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cpe:2.3:o:apple:mac_os_x:10.12
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cpe:2.3:o:apple:mac_os_x:10.12.0
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cpe:2.3:o:apple:mac_os_x:10.12.1
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cpe:2.3:o:apple:mac_os_x:10.12.2
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cpe:2.3:o:apple:mac_os_x:10.12.3
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cpe:2.3:o:apple:mac_os_x:10.12.4
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cpe:2.3:o:apple:mac_os_x:10.12.5
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cpe:2.3:o:apple:mac_os_x:10.12.6
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cpe:2.3:o:apple:mac_os_x:10.13
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cpe:2.3:o:apple:mac_os_x:10.13.0
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cpe:2.3:o:apple:mac_os_x:10.13.1
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cpe:2.3:o:apple:mac_os_x:10.13.2
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cpe:2.3:o:apple:mac_os_x:10.13.3
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cpe:2.3:o:apple:mac_os_x:10.13.4
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cpe:2.3:o:apple:mac_os_x:10.13.5
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cpe:2.3:o:apple:mac_os_x:10.13.6
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cpe:2.3:o:apple:mac_os_x:10.14
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cpe:2.3:o:apple:mac_os_x:10.14.0
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cpe:2.3:o:apple:mac_os_x:10.14.1
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cpe:2.3:o:apple:mac_os_x:10.14.2
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cpe:2.3:o:apple:mac_os_x:10.14.3
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cpe:2.3:o:apple:mac_os_x:10.14.4
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cpe:2.3:o:apple:mac_os_x:10.14.5
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cpe:2.3:o:apple:mac_os_x:10.14.6
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cpe:2.3:o:apple:mac_os_x:10.15
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cpe:2.3:o:apple:mac_os_x:10.15.1
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cpe:2.3:o:apple:mac_os_x:10.15.2
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cpe:2.3:o:apple:mac_os_x:10.15.3
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cpe:2.3:o:apple:mac_os_x:10.15.4
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cpe:2.3:o:apple:mac_os_x:10.15.5
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cpe:2.3:o:apple:mac_os_x:10.15.6
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cpe:2.3:o:apple:mac_os_x:10.15.7
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cpe:2.3:o:apple:mac_os_x:11.0.0
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cpe:2.3:o:apple:mac_os_x:11.0.1
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cpe:2.3:o:apple:mac_os_x:11.1.0
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cpe:2.3:o:apple:mac_os_x:11.2.0
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cpe:2.3:o:apple:mac_os_x:11.2.1
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cpe:2.3:o:apple:mac_os_x:11.2.3
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:14.04.1
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cpe:2.3:o:canonical:ubuntu_linux:14.04.2
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cpe:2.3:o:canonical:ubuntu_linux:14.04.3
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cpe:2.3:o:canonical:ubuntu_linux:14.04.4
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cpe:2.3:o:canonical:ubuntu_linux:14.04.5
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cpe:2.3:o:canonical:ubuntu_linux:14.04.6
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cpe:2.3:o:canonical:ubuntu_linux:14.10
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cpe:2.3:o:canonical:ubuntu_linux:15.04
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cpe:2.3:o:canonical:ubuntu_linux:15.10
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:16.04.1
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cpe:2.3:o:canonical:ubuntu_linux:16.04.2
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cpe:2.3:o:canonical:ubuntu_linux:16.04.3
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cpe:2.3:o:canonical:ubuntu_linux:16.04.4
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cpe:2.3:o:canonical:ubuntu_linux:16.04.5
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cpe:2.3:o:canonical:ubuntu_linux:16.04.6
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cpe:2.3:o:canonical:ubuntu_linux:16.10
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cpe:2.3:o:canonical:ubuntu_linux:17.04
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cpe:2.3:o:canonical:ubuntu_linux:17.10
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04.1
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cpe:2.3:o:canonical:ubuntu_linux:18.04.2
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cpe:2.3:o:canonical:ubuntu_linux:18.04.3
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cpe:2.3:o:canonical:ubuntu_linux:18.04.4
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cpe:2.3:o:canonical:ubuntu_linux:18.04.5
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cpe:2.3:o:canonical:ubuntu_linux:18.04.6
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cpe:2.3:o:canonical:ubuntu_linux:18.10
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cpe:2.3:o:canonical:ubuntu_linux:19.04
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cpe:2.3:o:canonical:ubuntu_linux:19.10
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:canonical:ubuntu_linux:20.10
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cpe:2.3:o:canonical:ubuntu_linux:21.04
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cpe:2.3:o:canonical:ubuntu_linux:21.10
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cpe:2.3:o:canonical:ubuntu_linux:22.04
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cpe:2.3:o:canonical:ubuntu_linux:22.10
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cpe:2.3:o:canonical:ubuntu_linux:23.04
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cpe:2.3:o:canonical:ubuntu_linux:23.10
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cpe:2.3:o:canonical:ubuntu_linux:24.04
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:fedoraproject:fedora:29
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cpe:2.3:o:fedoraproject:fedora:30
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cpe:2.3:o:opensuse:leap:15.0
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cpe:2.3:o:opensuse:leap:15.1
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:synology:diskstation_manager:6.2
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cpe:2.3:o:synology:vs960hd_firmware:-