{"cve":"CVE-2023-44198","nvd":{"published":"2023-10-13T00:15:12.760","modified":"2026-06-17T06:27:06.727","status":"Modified","description":"An Improper Check for Unusual or Exceptional Conditions vulnerability in the SIP ALG of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated network-based attacker to cause an integrity impact in connected networks.\n\nIf the SIP ALG is configured and a device receives a specifically malformed SIP packet, the device prevents this packet from being forwarded, but any subsequently received retransmissions of the same packet are forwarded as if they were valid.\n\nThis issue affects Juniper Networks Junos OS on SRX Series and MX Series:\n\n\n\n  *  20.4 versions prior to 20.4R3-S5;\n  *  21.1 versions prior to 21.1R3-S4;\n  *  21.2 versions prior to 21.2R3-S4;\n  *  21.3 versions prior to 21.3R3-S3;\n  *  21.4 versions prior to 21.4R3-S2;\n  *  22.1 versions prior to 22.1R2-S2, 22.1R3;\n  *  22.2 versions prior to 22.2R2-S1, 22.2R3;\n  *  22.3 versions prior to 22.3R1-S2, 22.3R2.\n\n\n\n\nThis issue doesn't not affected releases prior to 20.4R1.","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:H/A:N","score":7.5},"cwes":["CWE-754"],"references":["https://supportportal.juniper.net/JSA73164","https://supportportal.juniper.net/JSA73164"],"products":["juniper:junos"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-44198","score":0.00417,"percentile":0.35998,"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."]}