{"id":"CVE-2021-34598","aliases":["EUVD-2021-21248","GHSA-2mrx-q835-w93g"],"status":"published","title":"Phoenix Contact: FL MGUARD lack of memory release in remote logging functionality","description":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00933,"percentile":0.61163,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2021-11-10T11:22:05Z","modified":"2026-06-17T03:56:12Z","products":[{"vendor":"phoenix contact","product":"fl mguard"},{"vendor":"phoenixcontact","product":"fl_mguard_1102_firmware"},{"vendor":"phoenixcontact","product":"fl_mguard_1105_firmware"}],"references":[{"url":"https://cert.vde.com/en/advisories/VDE-2021-046/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34598"},{"url":"https://github.com/advisories/GHSA-2mrx-q835-w93g"}],"sources":{"cve":[{"id":"CVE-2021-34598","title":"Phoenix Contact: FL MGUARD lack of memory release in remote logging functionality","description":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active","status":"published","published":"2021-11-10T11:22:05.667Z","modified":"2024-09-16T18:39:35.785Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:33:11.244759Z"}],"euvd":[{"id":"EUVD-2021-21248","description":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active","status":"published","published":"2021-11-10T11:22:05Z","modified":"2024-09-16T18:39:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:55:30.637715Z"}],"ghsa":[{"id":"GHSA-2mrx-q835-w93g","title":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging...","description":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active","status":"published","published":"2022-05-24T19:20:19Z","modified":"2023-01-30T05:03:52Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:46:55.674273Z"}],"nvd":[{"id":"CVE-2021-34598","description":"In Phoenix Contact FL MGUARD 1102 and 1105 in Versions 1.4.0, 1.4.1 and 1.5.0 the remote logging functionality is impaired by the lack of memory release for data structures from syslog-ng when remote logging is active","status":"published","published":"2021-11-10T12:15:16.16Z","modified":"2026-06-17T03:56:12.66Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}