{"id":"CVE-2021-20517","aliases":["EUVD-2021-7935","GHSA-fppj-frvc-63q2"],"status":"published","title":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote...","description":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.","severity":{"version":"3.0","score":6.4,"vector":"CVSS:3.0/UI:N/A:L/C:L/I:H/AV:N/AC:H/S:U/PR:L/RL:O/E:U/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.0186,"percentile":0.79542,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22"],"published":"2021-06-07T14:05:14Z","modified":"2026-06-17T03:33:57Z","products":[{"vendor":"ibm","product":"websphere application server nd"},{"vendor":"ibm","product":"websphere_application_server_nd"}],"references":[{"url":"https://www.ibm.com/support/pages/node/6456955","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/198435","tags":["vdb-entry","x_refsource_XF","x_transferred","VDB Entry","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20517"},{"url":"https://github.com/advisories/GHSA-fppj-frvc-63q2"}],"sources":{"cve":[{"id":"CVE-2021-20517","description":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.","status":"published","published":"2021-06-07T14:05:14.362Z","modified":"2024-09-17T02:36:50.637Z","cvss":[{"version":"3.0","score":6.4,"vector":"CVSS:3.0/UI:N/A:L/C:L/I:H/AV:N/AC:H/S:U/PR:L/RL:O/E:U/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-7935","description":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.","status":"published","published":"2021-06-07T14:05:14Z","modified":"2024-09-17T02:36:50Z","cvss":[{"version":"3.0","score":6.4,"vector":"CVSS:3.0/UI:N/A:L/C:L/I:H/AV:N/AC:H/S:U/PR:L/RL:O/E:U/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:28:39.162217Z"}],"ghsa":[{"id":"GHSA-fppj-frvc-63q2","title":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote...","description":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.","status":"published","published":"2022-05-24T19:04:15Z","modified":"2023-01-29T05:06:55Z","cwes":["CWE-22"],"updated_at":"2026-11-02T14:46:07.317218Z"}],"nvd":[{"id":"CVE-2021-20517","description":"IBM WebSphere Application Server Network Deployment 8.5 and 9.0 could allow a remote authenticated attacker to traverse directories. An attacker could send a specially-crafted URL request containing \"dot dot\" sequences (/../) to read and delete arbitrary files on the system. IBM X-Force ID: 198435.","status":"published","published":"2021-06-07T14:15:07.767Z","modified":"2026-06-17T03:33:57.647Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":6.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:L","level":"medium","assessor":"secondary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:06:54.439974Z"}]}}