CVE WatchJul 15, 2026

CVE-2026-54429

A vulnerability has been identified in SIMATIC S7-PLCSIM Advanced (All versions). Affected devices do not properly handle high-volume multic

CVSS

7.4

High

EPSS

0.2%

p12

KEV

—

Exploit Today

0-100

Published: Jul 14, 2026 · Last modified: Jul 15, 2026 · CWE-770

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-07-142026-07-17

Technical description

A vulnerability has been identified in SIMATIC S7-PLCSIM Advanced (All versions). Affected devices do not properly handle high-volume multicast network traffic, which can exhaust available memory resources in the affected application. This could allow an unauthenticated attacker on the local network segment to cause a denial-of-service condition of the affected application. The affected application becomes inaccessible and requires a manual restart; no project data is lost. Successful exploitation requires a specific project configuration to be already active on the targeted instance.

Official references

cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-828211.html

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