CVE-2026-54429 (GCVE-0-2026-54429)

Vulnerability from cvelistv5 – Published: 2026-07-14 09:19 – Updated: 2026-07-14 12:15
VLAI
Summary
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.
Severity
7.4 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
6 (Medium)
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 12:15 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
siemens CNA under the icscert root
CNA scorecard C 65/100 over 100 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Siemens SIMATIC S7-PLCSIM Advanced Affected: 0 , < * (custom)
guessed Create a notification for this product.
Show details on NVD website
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