FreeRDP before 3.29.0 fails to properly validate server-supplied RDPDR paths in drive redirection, allowing attackers to access prefix-sibling paths outside the configured shared root. A malicious RDP server can read, write, delete, and enumerate files in sibling directories by sending non-rooted paths that bypass the shared-root boundary check.
https://www.vulncheck.com/advisories/freerdp-before-path-traversal-via-drive-redirection
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8xqm-wp3f-rfp9
https://github.com/FreeRDP/FreeRDP/commit/8d3b86022f0d71aefa7bd2e466d2d391693a41b3
Published: 2026-08-01
Updated: 2026-08-01
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 6.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Severity: Medium
Base Score: 5.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Severity: Medium