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CVE-2026-54429

HIGH
7.4
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-54429
State
PUBLISHED
Assigner
siemens
Reserved
2026-06-15 10:05 UTC
Published
2026-07-14 09:19 UTC
Last updated
2026-07-14 09:19 UTC
Primary CWE
CWE-770
CWE-770: Allocation of Resources Without Limits or Throttlin…
Vendor / Product
Siemens / SIMATIC S7-PLCSIM Advanced
Sources
cve.org  ·  NVD

Severity & Metrics

7.4 HIGH CVSS 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
Siemens SIMATIC S7-PLCSIM Advanced — 0 < *
Weakness (CWE)
CWESourceDescription
CWE-770 cna CWE-770: Allocation of Resources Without Limits or Throttling
CVSS scores (2)
ScoreSeverityVersionSourceVector
7.4 HIGH 3.1 cna CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
6.0 MEDIUM 4.0 cna 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
References (1)
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