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CVE-2024-43387

Phoenix Contact: Access files due to improper neutralization of special elements in MGUARD devices

HIGH

8.8

CVSS Score

Published: September 10, 2024 at 08:43 AM UTC

Updated: June 17, 2026 at 07:50 AM UTC

72 products affected across 1 vendorFl Mguard RS4004 Tx /dtx VPN FirmwareFl Mguard RS4004 Tx /dtx FirmwareFl Mguard RS4000 Tx /tx VPN Firmware

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Severity

HIGH8.8

Exploit prediction

EPSS 0.6%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fl Mguard 2102 Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-2102 (same device)

Fl Mguard 2105 Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-2105 (same device)

Fl Mguard 4102 PCI Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-4102-pci (same device)

Fl Mguard 4102 PCIE Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-4102-pcie (same device)

Fl Mguard 4302 Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-4302 (same device)

Fl Mguard 4305 Firmware · Phoenix Contact

95%

v < 10.4.1

Affected range stops below 10.4.1, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-4305 (same device)

Fl Mguard Centerport VPN 1000 Firmware · Phoenix Contact

95%

v < 8.9.3

Affected range stops below 8.9.3, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-centerport-vpn-1000 (same device)

Fl Mguard Core Tx Firmware · Phoenix Contact

95%

v < 8.9.3

Affected range stops below 8.9.3, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-core-tx (same device)

Fl Mguard Core Tx VPN Firmware · Phoenix Contact

95%

v < 8.9.3

Affected range stops below 8.9.3, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-core-tx-vpn (same device)

Fl Mguard Delta Tx /tx Firmware · Phoenix Contact

95%

v < 8.9.3

Affected range stops below 8.9.3, so it looks safe — our inference, not a vendor statement

phoenixcontact-fl-mguard-delta-tx-tx (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Third Party Advisory

Source: [email protected]

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCERTVDE

Attack Vector: NETWORK
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-78

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