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TI-2017-05546 Aliases CVE-2017-7937GHSA-93xj-xqmv-6cxx

Improper authentication in Phoenix Contact GmbH mGuard

Priority LOW 20CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-287.

Summary

An Improper Authentication issue was discovered in Phoenix Contact GmbH mGuard firmware versions 8.3.0 to 8.4.2. An attacker may be able to gain unauthorized access to the user firewall when RADIUS servers are unreachable.

Why it matters now

EPSS 0.00712 53rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—Phoenix Contact GmbH mGuardPhoenix Contact GmbH mGuard—No fix listedCNA
  • Phoenix Contact GmbH mGuard Vendor— Affected Phoenix Contact GmbH mGuard Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.0:*:*:*:*:*:*:*8.3.0VulnerablePhoenix Contact
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.1:*:*:*:*:*:*:*8.3.1VulnerablePhoenix Contact
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.2:*:*:*:*:*:*:*8.3.2VulnerablePhoenix Contact
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.0:*:*:*:*:*:*:*8.4.0VulnerablePhoenix Contact
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.1:*:*:*:*:*:*:*8.4.1VulnerablePhoenix Contact
cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.2:*:*:*:*:*:*:*8.4.2VulnerablePhoenix Contact
cpe:2.3:h:phoenix_contact_gmbh:mguard:-:*:*:*:*:*:*:*not specified by NVDRunning onPhoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.0:*:*:*:*:*:*:* Versions 8.3.0 Vulnerable ·Phoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.1:*:*:*:*:*:*:* Versions 8.3.1 Vulnerable ·Phoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.3.2:*:*:*:*:*:*:* Versions 8.3.2 Vulnerable ·Phoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.0:*:*:*:*:*:*:* Versions 8.4.0 Vulnerable ·Phoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.1:*:*:*:*:*:*:* Versions 8.4.1 Vulnerable ·Phoenix Contact
  • cpe:2.3:o:phoenix_contact_gmbh:mguard_firmware:8.4.2:*:*:*:*:*:*:* Versions 8.4.2 Vulnerable ·Phoenix Contact
  • cpe:2.3:h:phoenix_contact_gmbh:mguard:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Phoenix Contact

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-7937
  2. 2026-10-03 Alias added: GHSA-93xj-xqmv-6cxx

References

Advisory 1

  • TI-2017-05544 Uncontrolled resource consumption in Phoenix Contact GmbH mGuard CVSS 3.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences