{"id":"CVE-2026-25657","aliases":["EUVD-2026-34821","GHSA-jvw3-jcj6-6qc7"],"status":"published","title":"Ericsson Packet Core Gateway (PCG) - Improper Handling of Syntactically Invalid Structure Vulnerability","description":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00165,"percentile":0.05721,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-228"],"published":"2026-06-05T11:03:02Z","modified":"2026-10-26T11:10:00Z","products":[{"vendor":"ericsson","product":"packet core gateway (pcg)"},{"vendor":"ericsson","product":"packet_core_gateway"}],"references":[{"url":"https://www.ericsson.com/en/about-us/security/psirt/cve-2026-25657","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25657"},{"url":"https://github.com/advisories/GHSA-jvw3-jcj6-6qc7"}],"sources":{"cve":[{"id":"CVE-2026-25657","title":"Ericsson Packet Core Gateway (PCG) - Improper Handling of Syntactically Invalid Structure Vulnerability","description":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.","status":"published","published":"2026-06-05T11:03:02.273Z","modified":"2026-06-05T20:11:57.051Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-228"],"updated_at":"2026-11-02T13:41:30.911526Z"}],"euvd":[{"id":"EUVD-2026-34821","description":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.","status":"published","published":"2026-06-05T11:03:02Z","modified":"2026-06-05T20:11:57Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:50.521592Z"}],"ghsa":[{"id":"GHSA-jvw3-jcj6-6qc7","title":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of...","description":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.","status":"published","published":"2026-06-05T12:31:46Z","modified":"2026-06-08T15:33:53Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-228"],"updated_at":"2026-11-02T15:08:38.78705Z"}],"nvd":[{"id":"CVE-2026-25657","description":"Ericsson Packet Core Gateway (PCG) versions prior to 1.30 contain an Improper Handling of Syntactically Invalid Structure (CWE-228) vulnerability where an attacker continuously sending a specially crafted message can cause service degradation. The impact continues as long the attack persists but the system recovers from the crashes when the attack stops.","status":"published","published":"2026-06-05T12:16:37.75Z","modified":"2026-10-26T11:10:00.157Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"}],"cwes":["CWE-228"],"updated_at":"2026-11-02T14:12:22.371367Z"}]}}