---
id: "CVE-2026-113363"
page: "https://infrastack.ai/live/CVE-2026-113363"
kind: "vulnerability"
aliases: ["CVE-2026-113363"]
title: "NEC WebSAM WinShare: crafted packet lets remote attacker run commands as SYSTEM"
severity: "critical"
cvss: 9.3
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "WebSAM WinShare", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["nec-websam", "other", "windows", "winshare"]
not_affected_if: ["unknown"]
published_at: "2026-11-09T05:18:26+00:00"
first_seen_at: "2026-11-09T05:25:17+00:00"
updated_at: "2026-11-09T05:26:52+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-113363", "first_seen_at": "2026-11-09T05:25:17+00:00"}]
exploit_sources: []
---

# NEC WebSAM WinShare: crafted packet lets remote attacker run commands as SYSTEM

Link for people: https://infrastack.ai/live/CVE-2026-113363 (this .md is for agents)

NEC WebSAM WinShare on Windows mishandles network packets because it does not validate input properly. A remote, unauthenticated attacker who sends a crafted packet to the machine running WinShare can execute arbitrary commands with SYSTEM privileges.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:WebSAM WinShare affected range not listed fixed no fixed version listed

## How to check

- Check whether WebSAM WinShare is installed on Windows machines, and confirm its version against the affected range `7.2.0` through `7.7.2`.

## Fix

- WebSAM WinShare versions `7.2.0` through `7.7.2` are affected; the sources do not name a fixed version.

## Timeline

- 2026-11-09T05:25:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-113363

## From the sources

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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_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_