How severe is CVE-2018-4833?

CVE-2018-4833 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-4833 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4833?

CVE-2018-4833 primarily affects Siemens Rfid 181-eip Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-4833?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-4833 published?

CVE-2018-4833 was published on 2018-06-14 and last updated on 2026-06-17.

CVE-2018-4833

CVE-2018-4833 is a high-severity vulnerability in Siemens Rfid 181-eip Firmware with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Siemens Rfid 181-eip Firmware
Published: 2018-06-14
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-4833?: 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.
How severe is CVE-2018-4833?: CVE-2018-4833 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-4833 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4833?: CVE-2018-4833 primarily affects Siemens Rfid 181-eip Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-4833?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-4833 published?: CVE-2018-4833 was published on 2018-06-14 and last updated on 2026-06-17.

References

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

Affected products (10)

cpe:2.3:o:siemens:rfid_181-eip_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_wimax_firmware:4.4:*:*:*:*:*:*:*
cpe:2.3:o:siemens:ruggedcom_wimax_firmware:4.5:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x200irt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x204rna_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x300_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x408_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:scalance_x414_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:siemens:simatic_rf182c_firmware:-:*:*:*:*:*:*:*

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