ProFTPD before 1.3.9e and 1.3.10rc5 contains a buffer overflow vulnerability in the mod_rewrite int:utf8trans RewriteMap that allows remote attackers to overwrite static buffers. Attackers can send FTP command arguments longer than 1024 bytes, without authentication if pre-login commands are rewritten, to corrupt session memory and crash the session.
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
- First seenCVSS 6.3 · proftpd projectNVD modified 2026-10-30 11:30
Affected (CPE criteria) 0
NVD has not attached CPE configurations yet.
References 7
- https://github.com/proftpd/proftpd/commit/502d280b8d0ef72e44c6dd0a35a9405af0a1e301 patch
- https://github.com/proftpd/proftpd/blob/v1.3.9d/contrib/mod_rewrite.c#L2052 technical-description
- https://github.com/proftpd/proftpd/releases/tag/v1.3.9e release-notes
- https://github.com/proftpd/proftpd/releases/tag/v1.3.10rc5 release-notes
- https://abraxaslabs.tech/research/proftpd-rewrite-utf8trans third-party-advisory
- https://github.com/proftpd/proftpd product
- https://www.vulncheck.com/advisories/proftpd-before-1.3-9e-and-1.3-10rc5-buffer-overflow-via-mod-rewrite-utf8trans-rewritemap third-party-advisory