7.4
High
CVE-2026-54429 A vulnerability has been identified in SIMATIC S7-PLCSIM Advanced (All versions)
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| SIMATIC S7-PLCSIM Advanced | Versions not published |
References
- cert-portal.siemens.com cert-portal.siemens.com
Timeline
- Published
- Last modified
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