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.
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 29 Jan 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 29 Jan 2026 14:45:00 +0000

Type Values Removed Values Added
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.
Title BacklinkSpeed 2.4 - Buffer Overflow PoC (SEH)
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 0, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-01-29T16:22:27.955Z

Reserved: 2026-01-27T15:47:08.000Z

Link: CVE-2020-36997

cve-icon Vulnrichment

Updated: 2026-01-29T16:22:21.625Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-29T15:16:06.160

Modified: 2026-01-29T16:31:00.867

Link: CVE-2020-36997

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses