What is CVE-2018-25366?

CVE-2018-25366 is a high-severity vulnerability in Globalscape Cuteftp, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-05-25.

How severe is CVE-2018-25366?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in Globalscape Cuteftp

CVE-2018-25366

CuteFTP 5.0 XP contains a buffer overflow vulnerability that allows local attackers to execute arbitrary code by injecting malicious payload into the Site Manager label field. Attackers can craft a payload exceeding 520 bytes that overwrit…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (4.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Globalscape Cuteftp — versions 5.0.4

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2018-25366?: CVE-2018-25366 is a high-severity vulnerability in Globalscape Cuteftp, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-05-25.
How severe is CVE-2018-25366?: High severity. CVSS v3 base score is 8.4 out of 10.