How severe is CVE-2024-43387?

CVE-2024-43387 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-2024-43387 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-43387?

CVE-2024-43387 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-2024-43387?

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-2024-43387 have an EU (EUVD) identifier?

Yes. CVE-2024-43387 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40260.

When was CVE-2024-43387 published?

CVE-2024-43387 was published on 2024-09-10 and last updated on 2026-06-17.

CVE-2024-43387

CVE-2024-43387 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% (43rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-40260
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 read and write files as root due to improper neutralization of special elements in the variable EMAIL_RELAY_PASSWORD in mGuard devices.

Frequently asked questions

What is CVE-2024-43387?: A low privileged remote attacker can read and write files as root due to improper neutralization of special elements in the variable EMAIL_RELAY_PASSWORD in mGuard devices.
How severe is CVE-2024-43387?: CVE-2024-43387 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-2024-43387 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-43387?: CVE-2024-43387 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-2024-43387?: 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-2024-43387 have an EU (EUVD) identifier?: Yes. CVE-2024-43387 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-40260.
When was CVE-2024-43387 published?: CVE-2024-43387 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:*:*:*:*:*:*:*:*

More vulnerabilities in Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn Firmware

CVE-2024-7699 — High (CVSS 8.8): An low privileged remote attacker can execute OS commands with root privileges due to improper neutralization of…
CVE-2024-43388 — High (CVSS 8.8): A low privileged remote attacker with write permissions can reconfigure the SNMP service due to improper input…
CVE-2024-43386 — High (CVSS 8.8): A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper…
CVE-2024-43385 — High (CVSS 8.8): A low privileged remote attacker can trigger the execution of arbitrary OS commands as root due to improper…
CVE-2024-43393 — High (CVSS 8.1): A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter,…
CVE-2024-43392 — High (CVSS 8.1): A low privileged remote attacker can perform configuration changes of the firewall services, including packet filter,…

All CVEs affecting Phoenixcontact Tc Mguard Rs4000 4g Vzw Vpn Firmware →

Other CWE-78 (OS Command Injection) vulnerabilities

CVE-2026-56004 — Critical (CVSS 10.0): A shellcode injection in the mercurial handler of the obs tar_scm source service before version 0.12.4 could be used by…
CVE-2026-56415 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability within the debug.pl script that is…
CVE-2026-56413 — Critical (CVSS 10.0): Storage Concentrator (SC & SCVM) contains a command injection vulnerability in the ms_service.pl service, which listens…
CVE-2026-49869 — Critical (CVSS 10.0): Kestra is an open-source, event-driven orchestration platform. Prior to 1.0.45 and 1.3.21, AuthenticationFilter in…
CVE-2026-49261 — Critical (CVSS 10.0): MariaDB server is a community developed fork of MySQL server. Versions 10.6.1 through 10.6.26, 10.11.1 through…
CVE-2026-10520 — Critical (CVSS 10.0): An OS Command Injection vulnerability in Ivanti Sentry before the R10.5.2, R10.6.2 and R10.7.1 versions allows a…

Browse all CWE-78 (OS Command Injection) vulnerabilities →