CVE-2026-62416

Unauthenticated File Upload in Sharp Network Scanner Tools Exposes DoS and Potential Execution Risk

Published Aug 3, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
Network Scanner Tool and Network Scanner Tool Lite provided by Sharp Corporation, with the initial configuration, require no authentication and accept files unlimitedly. When the affected products are used with the initial configuration, anyone can connect to them without authentication and upload files unlimitedly. This may cause a denial-of-service (DoS) condition on the PC. Furthermore, if a malicious file is uploaded, a PC user may be tricked to execute the file to attack other entities from that PC.

Analysis

AI-generated

Technical impact

The vulnerability allows anyone to connect to the Network Scanner Tool or its Lite version without authentication and upload files without restriction. This lack of access control can trigger a denial‑of‑service condition by exhausting system resources. Additionally, if a malicious file is uploaded, the operating system may be tricked into executing that file, exposing the host PC to further attacks against other entities.

Affected Systems

Affected products are the Sharp Corporation Network Scanner Tool and Network Scanner Tool Lite when deployed with their initial configuration. No specific version data is provided, so all installations using the default unauthenticated settings are potentially vulnerable.

Risk and Exploitability

The CVSS score of 6.9 indicates moderate severity, and because the EPSS score is not available, there is no current evidence of widespread exploitation. However, the product’s network‑exposed component and the ability to upload arbitrary files without authentication create a straightforward attack vector for remote attackers. Since the vulnerability is already exploitable in its out‑of‑the‑box configuration, attackers can readily use it to induce a denial of service and possibly prompt local execution of malicious payloads.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Update the product to the latest patched version supplied by Sharp Corporation.
  • Configure the appliance to require authentication for all connections to the Network Scanner Tool or Network Scanner Tool Lite.
  • Restrict upload capabilities by enforcing a maximum file size and scanning uploads for malicious content before execution.

Generated by OpenCVE AI on August 4, 2026 at 10:30 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Sharp Corporation
Sharp Corporation network Scanner Tool (bundled Software For Sharpdesk)
Sharp Corporation network Scanner Tool Lite
Vendors & Products Sharp Corporation
Sharp Corporation network Scanner Tool (bundled Software For Sharpdesk)
Sharp Corporation network Scanner Tool Lite
Type Values Removed Values Added
Title Unauthenticated File Upload in Sharp Network Scanner Tools Exposes DoS and Potential Execution Risk
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Network Scanner Tool and Network Scanner Tool Lite provided by Sharp Corporation, with the initial configuration, require no authentication and accept files unlimitedly. When the affected products are used with the initial configuration, anyone can connect to them without authentication and upload files unlimitedly. This may cause a denial-of-service (DoS) condition on the PC. Furthermore, if a malicious file is uploaded, a PC user may be tricked to execute the file to attack other entities from that PC.
Weaknesses CWE-1188
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Weaknesses
  • CWE-1188

    Initialization of a Resource with an Insecure Default

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Aug 3, 2026, 11:09 AM
Reserved
Jul 14, 2026, 7:22 AM
Status
Awaiting Analysis
Published
Aug 3, 2026, 9:17 AM
Modified
Aug 3, 2026, 5:40 PM