Back to overview

CVE-2020-36997

CRITICAL Exploitation: PoC
9.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2020-36997
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-01-27 15:47 UTC
Published
2026-01-29 14:28 UTC
Last updated
2026-05-12 20:46 UTC
Primary CWE
CWE-121
Stack-based Buffer Overflow
Vendor / Product
Dummysoftware / BacklinkSpeed
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
yes
Tech. Impact
total
Affected products (1)
VendorProductPlatformVersions
Dummysoftware BacklinkSpeed — 2.4
Weakness (CWE)
CWESourceDescription
CWE-121 cna Stack-based Buffer Overflow
CVSS scores (2)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4 HIGH 4.0 cna 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
References (4)
Back to overview