PT-2026-5274 · Dummysoftware · Backlinkspeed

Published 2026-01-29 · Updated 2026-01-29 · CVE-2020-36997

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions BacklinkSpeed version 2.4

Description A buffer overflow allows attackers to corrupt the Structured Exception Handler (SEH) chain—a mechanism used to handle software errors—by importing malicious files. By using a specially designed payload file to overwrite SEH addresses, an attacker can potentially execute arbitrary code and gain control of the application.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2020-36997

Affected Products

Backlinkspeed

References · 5

• 🔥 https://exploit-db.com/exploits/48726 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-36997 · Security Note
• http://dummysoftware.com · Note
• https://vulncheck.com/advisories/backlinkspeed-buffer-overflow-poc-seh · Note
• http://dummysoftware.com/backlinkspeed.html · Note