CVE-2026-113363
Received Received - Intake

Improper Input Validation in NEC WebSAM WinShare

Publication date: 2026-11-09

Last updated on: 2026-11-09

Assigner: NEC Corporation

Description
Improper Input Validation in the network communication processing in NEC Corporation WebSAM WinShare Ver 7.2.0 through 7.5.0, Ver 7.6.0 and Ver 7.7.0 through 7.7.2 on Windows allows a remote unauthenticated attacker to execute arbitrary commands with SYSTEM privileges via a crafted network packet sent to the computer on which WinShare is running.

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Meta Information

Published
2026-11-09
Last Modified
2026-11-09
Generated
2026-11-09
AI Q&A
2026-11-09
EPSS Evaluated
N/A
NVD
CVE-2026-113363
EUVD
EUVD-2026-119797

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
nec_corporation winsam_winshare From 7.2.0 (inc) to 7.5.0 (inc)
nec_corporation winsam_winshare 7.6.0
nec_corporation winsam_winshare From 7.7.0 (inc) to 7.7.2 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-749 The product provides an Applications Programming Interface (API) or similar interface for interaction with external actors, but the interface includes a dangerous method or function that is not properly restricted.

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Executive Summary

This is an improper input validation vulnerability in NEC Corporation's WebSAM WinShare software versions 7.2.0 through 7.7.2 on Windows. A remote unauthenticated attacker can send a specially crafted network packet to a vulnerable system running WinShare, allowing them to execute arbitrary commands with SYSTEM privileges.

Impact Analysis

This vulnerability allows attackers to take full control of affected systems remotely without authentication. They could install malware, steal data, modify system configurations, or disrupt operations. Systems running vulnerable WebSAM WinShare versions are at high risk of compromise.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR's data protection requirements and HIPAA's security rules. Organizations using affected WebSAM WinShare versions may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately update NEC Corporation WebSAM WinShare to the latest patched version. If updating is not possible, consider disabling the service or restricting network access to the affected system until a patch is applied.

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