{"id":"CVE-2023-6263","aliases":["EUVD-2023-58508","GHSA-xh6m-2h5x-55mh"],"status":"published","title":"Server Spoofing Vulnerability in NxCloud","description":"An issue was discovered by IPVM team in Network Optix NxCloud before 23.1.0.40440. It was possible to add a fake VMS server to NxCloud by using the exact identification of a legitimate VMS server. As result, it was possible to retrieve authorization headers from legitimate users when the legitimate client connects to the fake VMS server.","severity":{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00489,"percentile":0.42373,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-290"],"published":"2023-11-22T17:56:56Z","modified":"2026-06-17T06:50:25Z","products":[{"vendor":"network optix","product":"nxcloud"},{"vendor":"networkoptix","product":"nxcloud"}],"references":[{"url":"https://networkoptix.atlassian.net/wiki/spaces/CHS/blog/2023/09/22/3074195467/vulnerability+2023-09-21+-+Server+Spoofing","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-6263"},{"url":"https://github.com/advisories/GHSA-xh6m-2h5x-55mh"}],"sources":{"cve":[{"id":"CVE-2023-6263","title":"Server Spoofing Vulnerability in NxCloud","description":"An issue was discovered by IPVM team in Network Optix NxCloud before 23.1.0.40440. It was possible to add a fake VMS server to NxCloud by using the exact identification of a legitimate VMS server. As result, it was possible to retrieve authorization headers from legitimate users when the legitimate client connects to the fake VMS server.\n","status":"published","published":"2023-11-22T17:56:56.711Z","modified":"2024-08-02T08:28:20.362Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:35:25.469654Z"}],"euvd":[{"id":"EUVD-2023-58508","description":"An issue was discovered by IPVM team in Network Optix NxCloud before 23.1.0.40440. It was possible to add a fake VMS server to NxCloud by using the exact identification of a legitimate VMS server. As result, it was possible to retrieve authorization headers from legitimate users when the legitimate client connects to the fake VMS server.\n","status":"published","published":"2023-11-22T17:56:56Z","modified":"2024-08-02T08:28:20Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:50:10.614957Z"}],"ghsa":[{"id":"GHSA-xh6m-2h5x-55mh","title":"An issue was discovered in Network Optix NxCloud before 23.1.0.40440. It was possible to add a...","description":"An issue was discovered in Network Optix NxCloud before 23.1.0.40440. It was possible to add a fake VMS server to NxCloud by using the exact identification of a legitimate VMS server. As result, it was possible to retrieve authorization headers from legitimate users when the legitimate client connects to the fake VMS server.\n","status":"published","published":"2023-11-22T18:30:57Z","modified":"2023-11-22T18:31:04Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:55:05.15943Z"}],"nvd":[{"id":"CVE-2023-6263","description":"An issue was discovered by IPVM team in Network Optix NxCloud before 23.1.0.40440. It was possible to add a fake VMS server to NxCloud by using the exact identification of a legitimate VMS server. As result, it was possible to retrieve authorization headers from legitimate users when the legitimate client connects to the fake VMS server.\n","status":"published","published":"2023-11-22T18:15:09.78Z","modified":"2026-06-17T06:50:25.02Z","cvss":[{"version":"3.1","score":8.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:08:49.393375Z"}]}}