How severe is CVE-2024-43386?

CVE-2024-43386 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2024-43386 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-43386?

CVE-2024-43386 primarily affects Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn Firmware. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-43386?

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.

Does CVE-2024-43386 have an EU (EUVD) identifier?

Yes. CVE-2024-43386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40259.

When was CVE-2024-43386 published?

CVE-2024-43386 was published on 2024-09-10 and last updated on 2026-06-17.

CVE-2024-43386

CVE-2024-43386 is a high-severity vulnerability in Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-40259
Weakness: CWE-78
Affected product: Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn Firmware
Published: 2024-09-10
Last modified: 2026-06-17

Description

A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralization of special elements in the variable EMAIL_NOTIFICATION.TO in mGuard devices.

Frequently asked questions

What is CVE-2024-43386?: A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper neutralization of special elements in the variable EMAIL_NOTIFICATION.TO in mGuard devices.
How severe is CVE-2024-43386?: CVE-2024-43386 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2024-43386 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-43386?: CVE-2024-43386 primarily affects Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn Firmware. In total, 36 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-43386?: 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.
Does CVE-2024-43386 have an EU (EUVD) identifier?: Yes. CVE-2024-43386 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40259.
When was CVE-2024-43386 published?: CVE-2024-43386 was published on 2024-09-10 and last updated on 2026-06-17.

References

https://cert.vde.com/en/advisories/VDE-2024-039

Affected products (36)

cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vzw_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_4g_att_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs4000_3g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs2000_4g_vzw_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs2000_4g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs2000_4g_att_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:tc_mguard_rs2000_3g_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_smart2_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_smart2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4004_tx\/dtx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx-p_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx-m_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs4000_tx\/tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2005_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2000_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_rs2000_tx\/tx-b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pcie4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pcie4000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pci4000_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_pci4000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_gt\/gt_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_gt\/gt_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_delta_tx\/tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_delta_tx\/tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_core_tx_vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_core_tx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_centerport_vpn-1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4305_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4302_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4102_pcie_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_4102_pci_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_2105_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:phoenixcontact:fl_mguard_2102_firmware:*:*:*:*:*:*:*:*

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