VULNERABILITY INTELLIGENCE
CVE-2026-67192
CVSS score8.1 HIGH
EPSS probability1.03%
CISA KEVNot currently listed
Published2026-07-29
Last modified2026-10-23
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
Xlight FTP Server before 3.9.5 contains a pre-authentication stack buffer overflow vulnerability that allows unauthenticated attackers to corrupt stack memory by sending malformed SSH packets when a GCM cipher is negotiated. Attackers can craft packets with an unvalidated length field passed directly to the GCM decrypt function, overwriting the stack cookie and return address to potentially achieve remote code execution before any authentication occurs.
Weakness classification
- disclosure@vulncheck.com: CWE-121