{"id":"CVE-2024-30397","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-30397","generatedAt":"2026-10-28T02:15:47.890Z","title":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the the Public Key Infrastructure daemon (pkid) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause Denial of Service (DoS).","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the the Public Key Infrastructure daemon (pkid) of Juniper Networks Junos OS allows an unauthenticated networked attacker to cause Denial of Service (DoS).\n\nThe pkid is responsible for the certificate verification. Upon a failed verification, the pkid uses all CPU resources and becomes unresponsive to future verification attempts. This means that all subsequent VPN negotiations depending on certificate verification will fail.\n\nThis CPU utilization of pkid can be checked using this command: \n  root@srx> show system processes extensive | match pkid\n  xxxxx  root  103  0  846M  136M  CPU1  1 569:00 100.00% pkid\n\nThis issue affects:\nJuniper Networks Junos OS\n  *  All versions prior to 20.4R3-S10;\n  *  21.2 versions prior to 21.2R3-S7;\n  *  21.4 versions prior to 21.4R3-S5;\n  *  22.1 versions prior to 22.1R3-S4;\n  *  22.2 versions prior to 22.2R3-S3;\n  *  22.3 versions prior to 22.3R3-S1;\n  *  22.4 versions prior to 22.4R3;\n  *  23.2 versions prior to 23.2R1-S2, 23.2R2.","published":"2024-04-12T16:15:39.000Z","lastModified":"2026-06-17T07:26:53.000Z","status":"Modified","sourceIdentifier":"sirt@juniper.net","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-754"],"affected":["juniper/junos"],"epss":{"score":0.00343,"percentile":0.27642,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://supportportal.juniper.net/JSA79179","tags":["Vendor Advisory"],"source":"sirt@juniper.net"},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","tags":["Issue Tracking"],"source":"sirt@juniper.net"},{"url":"https://supportportal.juniper.net/JSA79179","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","tags":["Issue Tracking"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-30397","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}