VDE-2025-054

Vulnerability from csaf_phoenixcontactgmbhcokg - Published: 2025-07-08 10:00 - Updated: 2025-07-08 10:00
Summary
Phoenix Contact: Multiple Vulnerabilities in PLCnext Firmware
Severity
Critical
Notes
Summary: Multiple vulnerabilities in the PLCnext system allowed low-privileged remote attackers to gain unauthorized access or trigger system reboots by manipulating configuration files and symbolic links. Affected services include watchdog, arp-preinit, and security-profile, potentially exposing critical system files. These issues have been resolved in firmware version 2025.0.2.
Impact: Availability, integrity, or confidentiality of the PLCnext Control might be compromised by attacks using these vulnerabilities.
Remediation: Update to the latest 2025.0.2 Firmware Release. PHOENIX CONTACT recommends to always use an up-to-date version of the PLCnext Engineer.
General Recommendation: Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our [application note](https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf).
CVE-2025-41665

An low privileged remote attacker can enforce the watchdog of the affected devices to reboot the PLC due to incorrect default permissions of a config file.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-276 - Incorrect Default Permissions
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-32001 —
Unresolved product id: CSAFPID-32002 —
Unresolved product id: CSAFPID-32004 —
Unresolved product id: CSAFPID-32005 —
Unresolved product id: CSAFPID-32007 —
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31001 —
Unresolved product id: CSAFPID-31002 —
Unresolved product id: CSAFPID-31004 —
Unresolved product id: CSAFPID-31005 —
Unresolved product id: CSAFPID-31007 —
CVE-2025-41666

A low privileged remote attacker with file access can replace a critical file used by the watchdog to get read, write and execute access to any file on the device after the watchdog has been initialized.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-32001 —
Unresolved product id: CSAFPID-32002 —
Unresolved product id: CSAFPID-32004 —
Unresolved product id: CSAFPID-32005 —
Unresolved product id: CSAFPID-32007 —
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31001 —
Unresolved product id: CSAFPID-31002 —
Unresolved product id: CSAFPID-31004 —
Unresolved product id: CSAFPID-31005 —
Unresolved product id: CSAFPID-31007 —
CVE-2025-41667

A low privileged remote attacker with file access can replace a critical file used by the arp-preinit script to get read, write and execute access to any file on the device.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-32001 —
Unresolved product id: CSAFPID-32002 —
Unresolved product id: CSAFPID-32004 —
Unresolved product id: CSAFPID-32005 —
Unresolved product id: CSAFPID-32007 —
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31001 —
Unresolved product id: CSAFPID-31002 —
Unresolved product id: CSAFPID-31004 —
Unresolved product id: CSAFPID-31005 —
Unresolved product id: CSAFPID-31007 —
CVE-2025-41668

A low privileged remote attacker with file access can replace a critical file or folder used by the service security-profile to get read, write and execute access to any file on the device.

8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Affected products
Product Identifier Version Remediation
Unresolved product id: CSAFPID-32001 —
Unresolved product id: CSAFPID-32002 —
Unresolved product id: CSAFPID-32004 —
Unresolved product id: CSAFPID-32005 —
Unresolved product id: CSAFPID-32007 —
Product Identifier Version Remediation
Unresolved product id: CSAFPID-31001 —
Unresolved product id: CSAFPID-31002 —
Unresolved product id: CSAFPID-31004 —
Unresolved product id: CSAFPID-31005 —
Unresolved product id: CSAFPID-31007 —
References
Acknowledgments
CERT@VDE certvde.com
Nozomi
To clipboard 

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        "text": "Multiple vulnerabilities in the PLCnext system allowed low-privileged remote attackers to gain unauthorized access or trigger system reboots by manipulating configuration files and symbolic links. Affected services include watchdog, arp-preinit, and security-profile, potentially exposing critical system files. These issues have been resolved in firmware version 2025.0.2.",
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      {
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        "text": "Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to our [application note](https://dam-mdc.phoenixcontact.com/asset/156443151564/0a870ae433c19148b80bd760f3a1c1f2/107913_en_03.pdf).",
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-41665",
      "cwe": {
        "id": "CWE-276",
        "name": "Incorrect Default Permissions"
      },
      "notes": [
        {
          "category": "description",
          "text": "An low privileged remote attacker can enforce the watchdog of the affected devices to reboot the PLC due to incorrect default permissions of a config file. ",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32007"
        ],
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          "CSAFPID-31004",
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          "CSAFPID-31007"
        ]
      },
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        {
          "category": "vendor_fix",
          "date": "2025-06-03T10:00:00.000Z",
          "details": "Phoenix Contact strongly recommends to upgrade to firmware 2025.02 which addresses this vulnerability and will be available for download for all affected devices within the next weeks.",
          "group_ids": [
            "CSAFGID-61001"
          ],
          "product_ids": [
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            "CSAFPID-11002",
            "CSAFPID-11003",
            "CSAFPID-11004",
            "CSAFPID-11011"
          ]
        }
      ],
      "scores": [
        {
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalScore": 6.5,
            "environmentalSeverity": "MEDIUM",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 6.5,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31004",
            "CSAFPID-31005",
            "CSAFPID-31007"
          ]
        }
      ],
      "title": "CVE-2025-41665"
    },
    {
      "cve": "CVE-2025-41666",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
        {
          "category": "description",
          "text": "A low privileged remote attacker with file access can replace a critical file used by the watchdog to get read, write and execute access to any file on the device after the watchdog has been initialized.\n",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32007"
        ],
        "known_affected": [
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          "CSAFPID-31002",
          "CSAFPID-31004",
          "CSAFPID-31005",
          "CSAFPID-31007"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-06-03T10:00:00.000Z",
          "details": "Phoenix Contact strongly recommends to upgrade to firmware 2025.02 which addresses this vulnerability and will be available for download for all affected devices within the next weeks.",
          "group_ids": [
            "CSAFGID-61001"
          ],
          "product_ids": [
            "CSAFPID-11001",
            "CSAFPID-11002",
            "CSAFPID-11003",
            "CSAFPID-11004",
            "CSAFPID-11011"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
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            "CSAFPID-31002",
            "CSAFPID-31004",
            "CSAFPID-31005",
            "CSAFPID-31007"
          ]
        }
      ],
      "title": "CVE-2025-41666"
    },
    {
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      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
        {
          "category": "description",
          "text": "A low privileged remote attacker with file access can replace a critical file used by the arp-preinit script to get read, write and execute access to any file on the device.\n",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32007"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31004",
          "CSAFPID-31005",
          "CSAFPID-31007"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-06-03T10:00:00.000Z",
          "details": "Phoenix Contact strongly recommends to upgrade to firmware 2025.02 which addresses this vulnerability and will be available for download for all affected devices within the next weeks.",
          "group_ids": [
            "CSAFGID-61001"
          ],
          "product_ids": [
            "CSAFPID-11001",
            "CSAFPID-11002",
            "CSAFPID-11003",
            "CSAFPID-11004",
            "CSAFPID-11011"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31004",
            "CSAFPID-31005",
            "CSAFPID-31007"
          ]
        }
      ],
      "title": "CVE-2025-41667"
    },
    {
      "cve": "CVE-2025-41668",
      "cwe": {
        "id": "CWE-59",
        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
        {
          "category": "description",
          "text": "A low privileged remote attacker with file access can replace a critical file or folder used by the service security-profile to get read, write and execute access to any file  on the device.",
          "title": "Vulnerability Description"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-32001",
          "CSAFPID-32002",
          "CSAFPID-32004",
          "CSAFPID-32005",
          "CSAFPID-32007"
        ],
        "known_affected": [
          "CSAFPID-31001",
          "CSAFPID-31002",
          "CSAFPID-31004",
          "CSAFPID-31005",
          "CSAFPID-31007"
        ]
      },
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-06-03T10:00:00.000Z",
          "details": "Phoenix Contact strongly recommends to upgrade to firmware 2025.02 which addresses this vulnerability and will be available for download for all affected devices within the next weeks.",
          "group_ids": [
            "CSAFGID-61001"
          ],
          "product_ids": [
            "CSAFPID-11001",
            "CSAFPID-11002",
            "CSAFPID-11003",
            "CSAFPID-11004",
            "CSAFPID-11011"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 8.8,
            "environmentalSeverity": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 8.8,
            "temporalSeverity": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-31001",
            "CSAFPID-31002",
            "CSAFPID-31004",
            "CSAFPID-31005",
            "CSAFPID-31007"
          ]
        }
      ],
      "title": "CVE-2025-41668"
    }
  ]
}


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Tags
Taxonomy of the tags.




Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.