# CVE-2026-119146: ProFTPD before 1.3.9e and 1.3.10rc5 Buffer Overflow via mod_rewrite utf8trans RewriteMap

Status: published. Published: 2026-10-30. Updated: 2026-11-04.

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.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/proftpd/proftpd/commit/502d280b8d0ef72e44c6dd0a35a9405af0a1e301

## Affected products and versions

- ProFTPD Project / ProFTPD (proftpd/proftpd): ≥ 0; < 1.3.9e (affected, custom); ≥ 1.3.10rc1; < 1.3.10rc5 (affected, custom). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 6.3 (medium); CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 5.6 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L; source: CNA: VulnCheck

- CISA KEV: No listing in collected sources

- EPSS: 0.46% as of 2026-11-03; percentile 39.84%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-120

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/proftpd/proftpd/commit/502d280b8d0ef72e44c6dd0a35a9405af0a1e301 (CNA: VulnCheck; patch)

- https://github.com/proftpd/proftpd/blob/v1.3.9d/contrib/mod_rewrite.c#L2052 (CNA: VulnCheck; technical-description)

- https://github.com/proftpd/proftpd/releases/tag/v1.3.9e (CNA: VulnCheck; release-notes)

- https://github.com/proftpd/proftpd/releases/tag/v1.3.10rc5 (CNA: VulnCheck; release-notes)

- https://abraxaslabs.tech/research/proftpd-rewrite-utf8trans (CNA: VulnCheck; third-party-advisory)

- https://github.com/proftpd/proftpd (CNA: VulnCheck; product)

- https://www.vulncheck.com/advisories/proftpd-before-1.3-9e-and-1.3-10rc5-buffer-overflow-via-mod-rewrite-utf8trans-rewritemap (CNA: VulnCheck; third-party-advisory)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-119146; retrieved 2026-11-04; source updated 2026-11-04

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-119146; retrieved 2026-11-04; source updated Not reported

Revision: a3cd76780c0bab889b0e1fa7843b61f82b3eec04c0f23ec057a8f00c85fec0a6

Canonical: https://y2.dev/cve/CVE-2026-119146

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