What is CVE-2020-36940?

CVE-2020-36940 is a critical-severity vulnerability in Tucows Easy Cd & Dvd Cover Creator, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-01-27.

How severe is CVE-2020-36940?

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

Buffer overflow in Tucows Easy Cd & Dvd Cover Creator

CVE-2020-36940

Easy CD & DVD Cover Creator 4.13 contains a buffer overflow vulnerability in the serial number input field that allows attackers to crash the application. Attackers can generate a 6000-byte payload and paste it into the serial number field to trigger an application crash.

Vulnerability class: Buffer Overflow

EPSS: 0.002 (15.8th percentile) — read the EPSS interpretation.

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.

Affected products

Tucows Easy Cd & Dvd Cover Creator — versions 4.13

Weakness classification (CWE)

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

References

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

Frequently asked questions

What is CVE-2020-36940?: CVE-2020-36940 is a critical-severity vulnerability in Tucows Easy Cd & Dvd Cover Creator, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2026-01-27.
How severe is CVE-2020-36940?: Critical severity. CVSS v3 base score is 9.8 out of 10.