CVE-2026-62416Network attack vector

PC denial of service via unrestricted FTP uploads

Published Aug 3, 2026 · Updated Aug 3, 2026

Unrestricted file upload in Sharp Network Scanner Tool products allows remote attackers to interrupt a PC through anonymous FTP. The initial configuration enables anonymous FTP login and enforces no upload quantity limit, allowing arbitrary files to accumulate on the Windows host. Network access to a running Windows PC is required; affected releases are Network Scanner Tool 6.1.1.8 and earlier and Network Scanner Tool Lite 2.0.13.3 and earlier, while execution of an uploaded file still requires a PC user to open it.

CVSS severity6.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Sharp Network Scanner Tool products allows remote attackers to interrupt a PC through anonymous FTP. The initial configuration enables anonymous FTP login and enforces no upload quantity limit, allowing arbitrary files to accumulate on the Windows host. Network access to a running Windows PC is required; affected releases are Network Scanner Tool 6.1.1.8 and earlier and Network Scanner Tool Lite 2.0.13.3 and earlier, while execution of an uploaded file still requires a PC user to open it.

The record

CVE
CVE-2026-62416
Published
Aug 3, 2026
Updated
Aug 3, 2026
Vendor
Sharp Corporation
Product
Network Scanner Tool
Classifications
CWE-1188, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 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=0 <=V6.1.1.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sharp Corporation · Network Scanner Toolversion=0 <=V6.1.1.8
Sharp Corporation · Network Scanner Tool Liteversion=0 <=V2.0.13.3

Published CVSS scores

6.9JPCERT/CCCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
5.3JPCERT/CCCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1188Initialization of a Resource with an Insecure Default
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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