CVE-2020-36997

8.4 highEPSS 0.4%

High (8.4). 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.

Severity

CVSS 4.0

8.4 high

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
CWE: CWE-121
Published: 2026-01-29
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

http://www.dummysoftware.com
http://www.dummysoftware.com/backlinkspeed.html
https://www.exploit-db.com/exploits/48726
https://www.vulncheck.com/advisories/backlinkspeed-buffer-overflow-poc-seh

Check your stack JSON