Buffer overflow in Dummysoftware Backlinkspeed
CVE-2020-36997
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.
Vulnerability class: Buffer Overflow
Published · last modified .
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: 0.004 (33.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Dummysoftware Backlinkspeed — versions 2.4
Weakness classification (CWE)
References
- www.exploit-db.com/exploits/48726 (exploit)
- www.dummysoftware.com (product)
- www.dummysoftware.com/backlinkspeed.html (product)
- www.vulncheck.com/advisories/backlinkspeed-buffer-overflow-poc-seh (third-party-advisory)
Frequently asked questions
- What is CVE-2020-36997?
- CVE-2020-36997 is a critical-severity vulnerability in Dummysoftware Backlinkspeed, classified under Stack-based Buffer Overflow. CVSS score: 9.8/10. Published 2026-01-29.
- How severe is CVE-2020-36997?
- Critical severity. CVSS v3 base score is 9.8 out of 10.