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CVE-2018-4833

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-06-14 · updated 2026-06-17
• Weakness: CWE-122

Description

A vulnerability has been identified in RFID 181EIP (All versions), RUGGEDCOM Win (V4.4, V4.5, V5.0, and V5.1), SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions < V5.2.3), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.4.1), SCALANCE X-200RNA switch family (All versions < V3.2.6), SCALANCE X-300 switch family (incl. SIPLUS NET variants) (All versions < V4.1.3), SCALANCE X408 (All versions < V4.1.3), SCALANCE X414 (All versions), SIMATIC RF182C (All versions). Unprivileged remote attackers located in the same local network segment (OSI Layer 2) could gain remote code execution on the affected products by sending a specially crafted DHCP response to a client's DHCP request.

Affected products

• Siemens Rfid 181-Eip Firmware: all versions
• Siemens Ruggedcom Wimax Firmware: 4.4, 4.5
• Siemens Scalance X200 Firmware: before 5.2.3 — fixed in 5.2.3
• Siemens Scalance X200Irt Firmware: before 5.4.1 — fixed in 5.4.1
• Siemens Scalance X204Rna Firmware: all versions
• Siemens Scalance X300 Firmware: all versions
• Siemens Scalance X408 Firmware: all versions
• Siemens Scalance X414 Firmware: all versions
• Siemens Simatic Rf182C Firmware: all versions

How to fix

Upgrade to a fixed version: Siemens Scalance X200 Firmware 5.2.3; Siemens Scalance X200Irt Firmware 5.4.1. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-181018.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-181018.pdf

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