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CVE-2026-35025

8.6 high SSVC exploitation: none Analyzed
NVD · CVE.org

ProFTPD through 1.3.9b and 1.3.10rc2 contains an access control bypass vulnerability that allows authenticated FTP users to circumvent Directory ACL restrictions by prefixing paths with /proc/self/root in the RNFR command handler. Attackers can exploit the unresolved symlink components in dir_canonical_path() to cause dir_check() to perform lexical path comparisons that match no configured Directory block, enabling rename operations on files in DenyAll-protected directories and subsequent retrieval of those files. Mitigation: Sessions configured with DefaultRoot (chroot) are not affected, as chroot changes the directory to which /proc/self/root resolves.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.6 · proftpdNVD modified 2026-10-25 23:10

Affected (CPE criteria) 3

  • cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*
  • cpe:2.3:a:proftpd:proftpd:1.3.10:rc1:*:*:*:*:*:*
  • cpe:2.3:a:proftpd:proftpd:1.3.10:rc2:*:*:*:*:*:*

References 3