What is CVE-2020-37029?

CVE-2020-37029 is a high-severity vulnerability in K.soft Ftpdummy, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-01-30.

How severe is CVE-2020-37029?

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

Buffer overflow in K.soft Ftpdummy

CVE-2020-37029

FTPDummy 4.80 contains a local buffer overflow vulnerability in its preference file handling that allows attackers to execute arbitrary code. Attackers can craft a malicious preference file with carefully constructed shellcode to trigger a structured exception handler overwrite and execute system commands.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (5.4th 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

K.soft Ftpdummy — versions 4.80

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-2020-37029?: CVE-2020-37029 is a high-severity vulnerability in K.soft Ftpdummy, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.4/10. Published 2026-01-30.
How severe is CVE-2020-37029?: High severity. CVSS v3 base score is 8.4 out of 10.