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CVE-2026-113363

Quick assessment

Affected
NEC Corporation WebSAM WinShare
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NEC 公司 WebSAM WinShare 软件（Windows 平台）版本 7.2.0 至 7.5.0、7.6.0 以及 7.7.0 至 7.7.2 的网络通信处理模块中存在输入验证不当漏洞。该漏洞允许远程未认证攻击者通过向运行 WinShare 的计算机发送特制的网络数据包，以 SYSTEM 权限执行任意命令。

CVSS 9.3 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-113363

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
暴露危险的方法或函数
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
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 -

II. Public POCs for CVE-2026-113363

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-113363

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Other References for CVE-2026-113363 (1)

Same Patch Batch · NEC Corporation · 2026-11-09 · 3 CVEs total

CVE-2026-113364 9.3 CRITICAL NEC WebSAM 7.7.2 及更早版本远程缓冲区溢出漏洞
CVE-2026-113362 8.5 HIGH NEC WebSAM Winshare 7.5.0 及更早版本访问控制漏洞

IV. Related Vulnerabilities

Same product: WebSAM WinShare
Same vendor: NEC Corporation
Same weakness: CWE-749