CVE-2026-22925

EUVD-2026-29424 · Published May 12, 2026

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V5.0). The affected application is susceptible to resource exhaustion when subjected to high volume of TCP SYN packets This could allow an attacker to render the service unavailable and cause denial-of-service conditions by overwhelming system resources.

Technologies

Siemens Simatic Cn 4100 FirmwareSiemens Simatic Cn 4100

Weaknesses

CWE-770

CVSS scores

v4.08.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
v3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

MITRE ATT&CK

Inferred

Where this vulnerability fits in an attack

ReconImpact

Initial Access Impact

T1190Exploit Public-Facing Application T1498.001Direct Network Flood T1498.002Reflection Amplification T1499Endpoint Denial of Service T1499.001OS Exhaustion Flood T1499.002Service Exhaustion Flood T1499.003Application Exhaustion Flood

References

https://cert-portal.siemens.com/productcert/html/ssa-032379.html

Potentially impacted assets

See if this affects your attack surface