What is CVE-2020-37075?

CVE-2020-37075 is a critical-severity vulnerability in Lizardsystems Lansend, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-02-03.

How severe is CVE-2020-37075?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Lizardsystems Lansend

CVE-2020-37075

LanSend 3.2 contains a buffer overflow vulnerability in the Add Computers Wizard file import functionality that allows remote attackers to execute arbitrary code. Attackers can craft a malicious payload file to trigger a structured exception handler (SEH) overwrite and execute shellcode when importing computers from a file.

Vulnerability class: Buffer Overflow

Published 2026-02-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Lizardsystems Lansend — versions 3.2

Weakness classification (CWE)

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

References

www.exploit-db.com/exploits/48461 (exploit)
lizardsystems.com/lansend/ (product)
www.vulncheck.com/advisories/lansend-buffer-overflow-seh (third-party-advisory)

Frequently asked questions

What is CVE-2020-37075?: CVE-2020-37075 is a critical-severity vulnerability in Lizardsystems Lansend, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-02-03.
How severe is CVE-2020-37075?: Critical severity. CVSS v3 base score is 9.8 out of 10.