{"cve":"CVE-2023-22403","nvd":{"published":"2023-01-13T00:15:10.767","modified":"2026-06-17T05:35:21.867","status":"Modified","description":"An Allocation of Resources Without Limits or Throttling vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS allows a network-based, unauthenticated attacker to cause a Denial of Service (DoS).\n\n\n\nOn QFX10K Series, Inter-Chassis Control Protocol (ICCP) is used in MC-LAG topologies to exchange control information between the devices in the topology. ICCP connection flaps and sync issues will be observed due to excessive specific traffic to the local device.\n\n\n\nThis issue affects Juniper Networks Junos OS on QFX10K Series:\n\n  *  All versions prior to 20.2R3-S7;\n  *  20.4 versions prior to 20.4R3-S4;\n  *  21.1 versions prior to 21.1R3-S3;\n  *  21.2 versions prior to 21.2R3-S1;\n  *  21.3 versions prior to 21.3R3;\n  *  21.4 versions prior to 21.4R3;\n  *  22.1 versions prior to 22.1R2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://kb.juniper.net/JSA70199","https://kb.juniper.net/JSA70199"],"products":["juniper:junos"],"source":"nvd","synced_at":"2026-10-19T21:37:34.931465858+00:00"},"epss":{"cve":"CVE-2023-22403","score":0.00661,"percentile":0.51644,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}