CVE-2020-37075Public exploit

Code execution via unchecked import filename

Published Feb 3, 2026 · Updated Feb 3, 2026

Buffer overflow in LanSend 3.2 allows attackers to execute arbitrary code through a crafted filename in the Add Computers Wizard. The filename input is copied without a size check, overwriting the structured exception handler and redirecting execution to embedded shellcode. Exploitation requires a user to open the wizard and supply the payload as the import filename; code runs in the LanSend process context.

CVSS severity9.8
Critical
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in LanSend 3.2 allows attackers to execute arbitrary code through a crafted filename in the Add Computers Wizard. The filename input is copied without a size check, overwriting the structured exception handler and redirecting execution to embedded shellcode. Exploitation requires a user to open the wizard and supply the payload as the import filename; code runs in the LanSend process context.

The record

CVE
CVE-2020-37075
Published
Feb 3, 2026
Updated
Feb 3, 2026
Vendor
LizardSystems
Product
LanSend
Classifications
CWE-120, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LizardSystems · LanSendversion=3.2

Published CVSS scores

9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1204.002User Execution: Malicious File
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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