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Critical · 9.8 CVE-2020-36997 EUVD-2020-30909GHSA-mrjv-54cc-hwh4

BacklinkSpeed 2.4 - Buffer Overflow PoC (SEH)

Published Jan 29, 2026 · Updated May 12, 2026 · Assigned by VulnCheck

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.

Affected products

VendorProductAffectedFixed
Dummysoftware BacklinkSpeed 2.4 —

References