What is CVE-2026-67192?

CVE-2026-67192 is a high-severity vulnerability in Xlight Ftp Server, classified under Stack-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-07-29.

How severe is CVE-2026-67192?

High severity. CVSS v3 base score is 8.1 out of 10.

Buffer overflow in Xlight Ftp Server

CVE-2026-67192

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…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Xlight Ftp Server — versions 0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

disclosure@vulncheck.com (third-party-advisory)
disclosure@vulncheck.com (release-notes)

Frequently asked questions

What is CVE-2026-67192?: CVE-2026-67192 is a high-severity vulnerability in Xlight Ftp Server, classified under Stack-based Buffer Overflow. CVSS score: 8.1/10. Published 2026-07-29.
How severe is CVE-2026-67192?: High severity. CVSS v3 base score is 8.1 out of 10.