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CVE-2021-31886

Out-of-bounds write in Siemens Nucleus Net

CVSS score

9.8

EPSS probability

%3.0

Risk score

0.3

Published

5 y ago

Related Security News

Articles and analysis bulletins in which the press and security publications have covered this vulnerability:

The Hacker News02.09.2026

Researchers Use Claude to Port Pre-Auth RCE Exploit From One PLC Model to Another

Forescout Research - Vedere Labs said it used Anthropic's Claude to port a working pre-authentication remote code execution (RCE) exploit from one WAGO programmable logic controller (PLC) to another, executing attacker-supplied ARM shellcode on live hardware. The exploit targets CVE-2021-31886, a stack-based buffer overflow in the Nucleus FTP server's handling of the USER command

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