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CVE-2020-36997

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/29/2026

Last Modified1/29/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-121

References

http://www.dummysoftware.com(disclosure@vulncheck.com)

http://www.dummysoftware.com/backlinkspeed.html(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/48726(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/backlinkspeed-buffer-overflow-poc-seh(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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