PT-2026-65836 · Xlight · Xlight Ftp Server

CVE-2026-67191 · Publicado 2026-07-29 · Atualizado 2026-07-29

NVD

CVSS v3.1

9.8

Crítica

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Xlight FTP Server before 3.9.5 contains a pre-authentication heap buffer overflow vulnerability that allows remote unauthenticated attackers to write past the end of a heap buffer by sending a malformed SSH client identification string. A logic error in the recv loop's termination condition uses an incorrect OR operator where an AND operator is required, enabling exploitation on any SSH or SFTP connection before authentication occurs.

Correção

Heap Based Buffer Overflow

Enumeração de Fraquezas

CWE-122

Identificadores relacionados

CVE-2026-67191

Produtos afetados

Xlight Ftp Server

Referências · 3

• https://vulncheck.com/advisories/xlight-ftp-server-pre-auth-heap-buffer-overflow-via-ssh-parser · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-67191 · Nota de Segurança
• https://xlightftpd.com/whatsnew.htm · Nota