{"id":"CVE-2025-2566","aliases":["EUVD-2025-19054","GHSA-8jgr-qfg7-w699"],"status":"published","title":"Deserialization of Untrusted Data in Kaleris Navis N4","description":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00645,"percentile":0.51276,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2025-06-24T18:27:21Z","modified":"2026-06-17T09:07:11Z","products":[{"vendor":"kaleris","product":"navis n4"}],"references":[{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-25-175-01","tags":["government-resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-2566"},{"url":"https://github.com/advisories/GHSA-8jgr-qfg7-w699"}],"sources":{"cve":[{"id":"CVE-2025-2566","title":"Deserialization of Untrusted Data in Kaleris Navis N4","description":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.","status":"published","published":"2025-06-24T18:27:21.479Z","modified":"2025-06-24T18:47:46.713Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:32:39.039362Z"}],"euvd":[{"id":"EUVD-2025-19054","description":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.","status":"published","published":"2025-06-24T18:27:21Z","modified":"2025-06-24T18:47:46Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T20:32:16.964954Z"}],"ghsa":[{"id":"GHSA-8jgr-qfg7-w699","title":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability....","description":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.","status":"published","published":"2025-06-24T21:30:28Z","modified":"2025-06-24T21:30:36Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:02:48.872885Z"}],"nvd":[{"id":"CVE-2025-2566","description":"Kaleris NAVIS N4 ULC (Ultra Light Client) contains an unsafe Java deserialization vulnerability. An unauthenticated attacker can make specially crafted requests to execute arbitrary code on the server.","status":"published","published":"2025-06-24T19:15:23.52Z","modified":"2026-06-17T09:07:11.8Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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":"critical","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:11:14.091082Z"}]}}