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A vulnerability has been identified in SINUMERIK 828D V4.7 (All versions < V4.7 SP6 HF1), SINUMERIK 840D sl V4.7 (All versions < V4.7 SP6 HF5), SINUMERIK 840D sl V4.8 (All versions < V4.8 SP3). The integrated VNC server on port 5900/tcp of the affected products could allow a remote attacker to execute code with privileged permissions on the system by sending specially crafted network requests to port 5900/tcp. Please note that this vulnerability is only exploitable if port 5900/tcp is manually opened in the firewall configuration of network port X130. The security vulnerability could be exploited by an attacker with network access to the affected devices and port. Successful exploitation requires no privileges and no user interaction. The vulnerability could allow an attacker to compromise confidentiality, integrity and availability of the VNC server. At the time of advisory publication no public exploitation of this security vulnerability was known.

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整数溢出或超界折返

多款Siemens产品数字错误漏洞

Siemens SINUMERIK 808D等都是德国西门子（Siemens）公司的数控机床系统控制器。 多款Siemens产品中存在整数溢出漏洞。远程攻击者可通过向集成VNC服务器的5900/TCP端口发送特制的网络请求利用该漏洞执行代码，影响VNC服务器的保密性、完整性和可用性。以下产品和版本受到影响：Siemens SINUMERIK 808D 4.7所有版本，4.8所有版本；828D 4.7 SP6 HF1之前的4.7所有版本；840D sl 4.7 SP6 HF5之前的4.7所有版本；840D

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