How severe is CVE-2018-5441?

CVE-2018-5441 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-5441 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5441?

CVE-2018-5441 primarily affects Phoenixcontact Mguard Centerport Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5441?

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-2018-5441 published?

CVE-2018-5441 was published on 2018-01-30 and last updated on 2026-06-17.

CVE-2018-5441

CVE-2018-5441 is a high-severity vulnerability in Phoenixcontact Mguard Centerport Firmware with a CVSS 3.x base score of 7.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (19th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Phoenixcontact Mguard Centerport Firmware
Published: 2018-01-30
Last modified: 2026-06-17

Description

An Improper Validation of Integrity Check Value issue was discovered in PHOENIX CONTACT mGuard firmware versions 7.2 to 8.6.0. mGuard devices rely on internal checksums for verification of the internal integrity of the update packages. Verification may not always be performed correctly, allowing an attacker to modify firmware update packages.

Frequently asked questions

What is CVE-2018-5441?: An Improper Validation of Integrity Check Value issue was discovered in PHOENIX CONTACT mGuard firmware versions 7.2 to 8.6.0. mGuard devices rely on internal checksums for verification of the internal integrity of the update packages. Verification may not always be performed correctly, allowing an attacker to modify firmware update packages.
How severe is CVE-2018-5441?: CVE-2018-5441 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-5441 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5441?: CVE-2018-5441 primarily affects Phoenixcontact Mguard Centerport Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5441?: 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-2018-5441 published?: CVE-2018-5441 was published on 2018-01-30 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:o:phoenixcontact:mguard_centerport_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_delta_tx\/tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_delta_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_gt\/gt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_gt\/gt_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_pci4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_pcie4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs2000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs2000_tx\/tx-b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs2005_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_tx\/tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_tx\/tx_vpn-m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_tx\/tx-p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4004_tx\/dtx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4004_tx\/dtx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_smart2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_smart2_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs2000_3g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_3g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_core_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs2000_4g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:mguard_rs4000_4g_vpn_firmware:*:*:*:*:*:*:*:*

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