CVE-2020-36997: Dummysoftware Backlinkspeed

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

BacklinkSpeed 2.4 contains a buffer overflow vulnerability that allows attackers to corrupt the Structured Exception Handler (SEH) chain through malicious file import. Attackers can craft a specially designed payload file to overwrite SEH addresses, potentially executing arbitrary code and gaining control of the application.

Affected products

• Dummysoftware Backlinkspeed: version 2.4 only

Published 2026-01-29. Last modified 2026-06-17.