Siemens SIMATIC S7-1500 CPU 1518 MFP Improper Update of Reference Count (CVE-2026-31391)

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description scriptid505798; scriptversion"1.2"; scriptsetattributeattribute:"pluginmodificationdate",...

Siemens SIMATIC S7-1500 CPU 1518 MFP Out-of-bounds Write (CVE-2026-41989)

This plugin only works with Tenable.ot. Please visit https://www.tenable.com/products/tenable-ot for more information. %NASLMINLEVEL 80900 C Tenable, Inc. include'compat.inc'; if description scriptid505683; scriptversion"1.2"; scriptsetattributeattribute:"pluginmodificationdate",...

Siemens SIMATIC S7-1500 Integer Overflow or Wraparound (CVE-2021-3520)

There's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability...