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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.

PUBLISHED Reserved 2026-01-27 | Published 2026-01-29 | Updated 2026-01-29 | Assigner VulnCheck




NONE: 0.0CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

Stack-based Buffer Overflow

Product status

2.4
affected

Credits

Saeed reza Zamanian finder

References

www.exploit-db.com/exploits/48726 (ExploitDB-48726) exploit

www.dummysoftware.com (Vendor Homepage) product

www.dummysoftware.com/backlinkspeed.html (Software Download Page) product

www.vulncheck.com/...s/backlinkspeed-buffer-overflow-poc-seh (VulnCheck Advisory: BacklinkSpeed 2.4 - Buffer Overflow PoC (SEH)) third-party-advisory

cve.org (CVE-2020-36997)

nvd.nist.gov (CVE-2020-36997)

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