{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-55201: Evil-WinRM - Path Traversal in download_dir() Function","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-55201","status":"final","version":"1","initial_release_date":"2026-06-17T19:08:47.264Z","current_release_date":"2026-06-17T19:08:47.264Z","revision_history":[{"date":"2026-06-17T19:08:47.264Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"Evil-WinRM through 3.9, fixed in commit 6ecd570, contains a path traversal vulnerability in the download_dir() function that allows a rogue or compromised remote Windows server to write files outside the intended download directory by returning filenames with traversal sequences from Get-ChildItem command output that are passed unsanitized to File.join(). Attackers controlling the remote server can exploit this to overwrite sensitive client-side files such as SSH authorized_keys or shell configuration files, achieving persistent access or privilege escalation on the client machine.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-55201 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-55201"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-55201"},{"category":"external","summary":"Pull Request","url":"https://github.com/Hackplayers/evil-winrm/pull/81"},{"category":"external","summary":"Patch Commit","url":"https://github.com/Hackplayers/evil-winrm/commit/6ecd570a298562dc72ad73978307eb34182f5850"},{"category":"external","summary":"vulncheck.com","url":"https://www.vulncheck.com/advisories/evil-winrm-path-traversal-in-download-dir-function"}]},"product_tree":{"branches":[{"category":"vendor","name":"Hackplayers","branches":[{"category":"product_name","name":"evil-winrm","branches":[{"category":"product_version_range","name":"<=3.9","product":{"name":"Hackplayers evil-winrm <=3.9","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:hackplayers:evil-winrm:*:*:*:*:*:*:*:*"}}},{"category":"product_version","name":"6ecd570a298562dc72ad73978307eb34182f5850","product":{"name":"Hackplayers evil-winrm 6ecd570a298562dc72ad73978307eb34182f5850","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:hackplayers:evil-winrm:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-55201","title":"Evil-WinRM - Path Traversal in download_dir() Function","notes":[{"category":"description","text":"Evil-WinRM through 3.9, fixed in commit 6ecd570, contains a path traversal vulnerability in the download_dir() function that allows a rogue or compromised remote Windows server to write files outside the intended download directory by returning filenames with traversal sequences from Get-ChildItem command output that are passed unsanitized to File.join(). Attackers controlling the remote server can exploit this to overwrite sensitive client-side files such as SSH authorized_keys or shell configuration files, achieving persistent access or privilege escalation on the client machine.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"],"fixed":["CSAFPID-2"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","baseScore":7.4,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 6ecd570a298562dc72ad73978307eb34182f5850.","product_ids":["CSAFPID-1"],"url":"https://github.com/Hackplayers/evil-winrm/commit/6ecd570a298562dc72ad73978307eb34182f5850"}]}]}