{"document":{"category":"csaf_vex","csaf_version":"2.1","notes":[{"category":"summary","text":"Palo Alto Networks PSIRT provided VEX document. This document is autogenerated.","title":"Kernel Vulnerability"}],"publisher":{"category":"vendor","name":"Palo Alto Networks","namespace":"https://security.paloaltonetworks.com"},"title":"Palo Alto Networks PSIRT provided VEX document: CVE-2016-5696","distribution":{"text":"Copyright © 2024 Palo Alto Networks. All rights reserved.","tlp":{"label":"CLEAR","url":"https://www.first.org/tlp/"}},"tracking":{"current_release_date":"2026-03-11T22:26:30.929Z","generator":{"date":"2026-03-11T22:26:30.929Z","engine":{"name":"Vulnogram","version":"0.0.9"}},"id":"CVE-2016-5696","initial_release_date":"2017-05-23T03:00:00.000Z","revision_history":[{"number":"1","date":"2026-03-11T15:26:30.000Z","summary":"Initial release"}],"status":"final","version":"1"}},"product_tree":{"branches":[{"name":"Palo Alto Networks","category":"vendor","branches":[]}]},"vulnerabilities":[{"cve":"CVE-2016-5696","product_status":{"fixed":["PANW-PAN-OS-419"],"known_affected":["PANW-PAN-OS-394","PANW-PAN-OS-418"],"known_not_affected":["PANW-PAN-OS-424"]},"notes":[{"category":"description","text":"A vulnerability exists in the kernel of PAN-OS that may result in Information Disclosure. The challenge ACK rate limiting in the kernel's networking subsystem may allow an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. (ref # PAN-62500 / CVE-2016-5696).\nSuccessful exploitation of this issue may allow an attacker to terminate a TCP connection or inject a payload into non-secured TCP connection between two endpoints on the network.\nThis issue affects PAN-OS 6.1, PAN-OS 7.0.15 and earlier, PAN-OS 7.1.9 and earlier\n"}],"references":[{"category":"external","summary":"NVD - CVE-2016-5696","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-5696"},{"category":"self","summary":"Palo Alto Networks Security Advisory CVE-2016-5696","url":"https://security.paloaltonetworks.com/CVE-2016-5696"}],"threats":[{"category":"impact","description":"A vulnerability exists in the kernel of PAN-OS that may result in Information Disclosure. The challenge ACK rate limiting in the kernel's networking subsystem may allow an off-path attacker to leak certain information about a given connection by creating congestion on the global challenge ACK rate limit counter and then measuring the changes by probing packets. (ref # PAN-62500 / CVE-2016-5696).\nSuccessful exploitation of this issue may allow an attacker to terminate a TCP connection or inject a payload into non-secured TCP connection between two endpoints on the network.\nThis issue affects PAN-OS 6.1, PAN-OS 7.0.15 and earlier, PAN-OS 7.1.9 and earlier\n"}],"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"LOW","baseScore":4.8,"baseSeverity":"MEDIUM"},"products":["PANW-PAN-OS-394","PANW-PAN-OS-418"]}]}]}