Buffer Overflow Vulnerability in BacklinkSpeed by Dummy Software
CVE-2020-36997

9.8NONE

Key Information:

Vendor

Dummysoftware

Status
Backlinkspeed
Vendor
CVE Published:
29 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36997?

BacklinkSpeed 2.4 is vulnerable to a buffer overflow issue that can lead to corruption of the Structured Exception Handler (SEH) chain. By importing a specially crafted malicious file, attackers could overwrite SEH addresses, potentially allowing them to execute arbitrary code and take control of the application. This exploit emphasizes the need for users to update to the latest version and practice caution when handling unknown file imports.

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Affected Version(s)

BacklinkSpeed 2.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36997 - Proof of Concept

References

https://www.exploit-db.com/exploits/48726
exploit
http://www.dummysoftware.com
product
http://www.dummysoftware.com/backlinkspeed.html
product

CVSS V4

Score:
Severity:
NONE
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Saeed reza Zamanian
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