SSA-723487 V1.8 (Last Update: 2025-12-09): RADIUS Protocol Susceptible to Forgery Attacks (CVE-2024-3596) - Impact to SCALANCE, RUGGEDCOM and Related Products

Risk Summary

<p>This advisory documents the impact of CVE-2024-3596 (also dubbed “Blastradius”), a vulnerability in the RADIUS protocol, to SCALANCE, RUGGEDCOM and related products.</p> <p>The vulnerability could allow on-path attackers, located between a Network Access Server (the RADIUS client, e.g., SCALANCE or RUGGEDCOM devices) and a RADIUS server (e.g., SINEC INS), to forge Access-Request packets in a way that enables them to modify the corresponding server response packet at will, e.g., turning an “Access-Reject” message into an “Access-Accept”. This would cause the Network Access Server to grant the attackers access to the network with the attackers desired authorization (and without the need of knowing or guessing legitimate access credentials).</p> <p>Further details incl. external references can be found in the chapter “Additional Information”. Siemens has released new versions for several affected products and recommends to update to the latest versions, and to configure the updated sys

CVEs (1)

Remediations

• Refer to Siemens ProductCERT advisory for patch and remediation guidance.

Affected Vendors

Affected Products (1)