Vulnerability-Lookup

CVE-2026-12562 (GCVE-0-2026-12562)

Vulnerability from cvelistv5 – Published: 2026-07-30 21:29 – Updated: 2026-07-31 15:39

Title

Toptech Systems RCU II+ and Multiload II+ Missing Authentication for Critical Function

Summary

The RCU II+ and Multiload II+ are vulnerable to an unauthenticated service that exposes a debug interface granting full root-level access to the embedded system. This vulnerability stems from a network-accessible port running a Target Communications Framework (TCF) service that does not require any authentication, allowing an attacker to directly interact with the Linux environment that powers the device. Once connected, an attacker can freely view and modify the filesystem, manipulate running processes, and control network interfaces, enabling deep alteration of system behavior.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                        
                          CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-306

Assigner

icscert

References

6 references

URL	Tags
https://s3.amazonaws.com/docs.toptech.com/nonpubl…
https://s3.amazonaws.com/docs.toptech.com/nonpubl…
https://s3.amazonaws.com/docs.toptech.com/index.h…
https://s3.amazonaws.com/docs.toptech.com/nonpubl…
https://www.cisa.gov/news-events/ics-advisories/i…
https://github.com/cisagov/CSAF/blob/develop/csaf…

Impacted products

2 products

Vendor	Product	Version
Toptech Systems	RCU II+	Affected: 0 , < 2025-11-24 (custom)
Toptech Systems	Multiload II+	Affected: 0 , < 2025-11-24 (custom)

Credits

Donald Green of Southwest Research Institute reported this vulnerability to CISA.

Show details on NVD website

JSON

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              "value": "\u003cdiv\u003eToptech Systems provides two methods for remediating affected RCU II+ \nand Multiload II+ units: First, move the device to a closed or segmented\n network without untrusted access.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eRun one of the RCU II+/Multiload II+ Vulnerability Removal Tools (VRT)\n available at \n\u003ca href=\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip\u003c/a\u003e,\n\u003ca href=\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz\"\u003e \nhttps://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz\u003c/a\u003e.\n \u003c/div\u003e\u003cul\u003e\u003cli\u003eThis option does not require breaking Weights and Measures seals and has the least operational impact.\u003c/li\u003e\u003c/ul\u003eInstall the latest firmware from \n\u003ca href=\"https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/\u003c/a\u003e.\n \u003cul\u003e\u003cli\u003eThis method requires stopping the bay and breaking the W\u0026amp;M seal. \nBe sure to back up the current ML configuration before performing the \nfirmware update.\u003c/li\u003e\u003c/ul\u003e\u003cdiv\u003e\nFor questions, contact Toptech Systems Support at security@toptech.com. \nAdditional details are available in Toptech System\u0027s firmware \nvulnerability notice: \n\u003ca href=\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf\u003c/a\u003e.\n\n\u003c/div\u003e"
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https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf .\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cdiv\u003eToptech Systems provides two methods for remediating affected RCU II+ \\nand Multiload II+ units: First, move the device to a closed or segmented\\n network without untrusted access.\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eRun one of the RCU II+/Multiload II+ Vulnerability Removal Tools (VRT)\\n available at \\n\u003ca href=\\\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip\\\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip\u003c/a\u003e,\\n\u003ca href=\\\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz\\\"\u003e \\nhttps://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz\u003c/a\u003e.\\n \u003c/div\u003e\u003cul\u003e\u003cli\u003eThis option does not require breaking Weights and Measures seals and has the least operational impact.\u003c/li\u003e\u003c/ul\u003eInstall the latest firmware from \\n\u003ca href=\\\"https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/\\\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/\u003c/a\u003e.\\n \u003cul\u003e\u003cli\u003eThis method requires stopping the bay and breaking the W\u0026amp;M seal. \\nBe sure to back up the current ML configuration before performing the \\nfirmware update.\u003c/li\u003e\u003c/ul\u003e\u003cdiv\u003e\\nFor questions, contact Toptech Systems Support at security@toptech.com. \\nAdditional details are available in Toptech System\u0027s firmware \\nvulnerability notice: \\n\u003ca href=\\\"https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf\\\"\u003ehttps://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf\u003c/a\u003e.\\n\\n\u003c/div\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip\"}, {\"url\": \"https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz\"}, {\"url\": \"https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/\"}, {\"url\": \"https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf\"}, {\"url\": \"https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-03\"}, {\"url\": \"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-03.json\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.4\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"The RCU II+ and Multiload II+ are vulnerable to an unauthenticated \\nservice that exposes a debug interface granting full root-level access \\nto the embedded system. This vulnerability stems from a \\nnetwork-accessible port running a Target Communications Framework (TCF) \\nservice that does not require any authentication, allowing an attacker \\nto directly interact with the Linux environment that powers the device. \\nOnce connected, an attacker can freely view and modify the filesystem, \\nmanipulate running processes, and control network interfaces, enabling \\ndeep alteration of system behavior.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The RCU II+ and Multiload II+ are vulnerable to an unauthenticated \\nservice that exposes a debug interface granting full root-level access \\nto the embedded system. This vulnerability stems from a \\nnetwork-accessible port running a Target Communications Framework (TCF) \\nservice that does not require any authentication, allowing an attacker \\nto directly interact with the Linux environment that powers the device. \\nOnce connected, an attacker can freely view and modify the filesystem, \\nmanipulate running processes, and control network interfaces, enabling \\ndeep alteration of system behavior.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-306\", \"description\": \"CWE-306\"}]}], \"providerMetadata\": {\"orgId\": \"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6\", \"shortName\": \"icscert\", \"dateUpdated\": \"2026-07-30T23:58:13.132Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-12562\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-31T15:39:49.359Z\", \"dateReserved\": \"2026-06-17T20:31:31.583Z\", \"assignerOrgId\": \"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6\", \"datePublished\": \"2026-07-30T21:29:35.378Z\", \"assignerShortName\": \"icscert\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

GHSA-W374-9VQX-5HR2

Vulnerability from github – Published: 2026-07-31 00:30 – Updated: 2026-07-31 00:30

Details

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8.7 (High)


                  
                    CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-12562"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-30T22:16:53Z",
    "severity": "HIGH"
  },
  "details": "The RCU II+ and Multiload II+ are vulnerable to an unauthenticated \nservice that exposes a debug interface granting full root-level access \nto the embedded system. This vulnerability stems from a \nnetwork-accessible port running a Target Communications Framework (TCF) \nservice that does not require any authentication, allowing an attacker \nto directly interact with the Linux environment that powers the device. \nOnce connected, an attacker can freely view and modify the filesystem, \nmanipulate running processes, and control network interfaces, enabling \ndeep alteration of system behavior.",
  "id": "GHSA-w374-9vqx-5hr2",
  "modified": "2026-07-31T00:30:21Z",
  "published": "2026-07-31T00:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-12562"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-03.json"
    },
    {
      "type": "WEB",
      "url": "https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+"
    },
    {
      "type": "WEB",
      "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf"
    },
    {
      "type": "WEB",
      "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz"
    },
    {
      "type": "WEB",
      "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip"
    },
    {
      "type": "WEB",
      "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-03"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

ICSA-26-211-03

Vulnerability from csaf_cisa - Published: 2026-07-30 06:00 - Updated: 2026-07-30 06:00

Summary

Toptech Systems RCU II+ and Multiload II+

Notes

Legal Notice and Terms of Use: This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).

Advisory Summary: Successful exploitation of this vulnerability could allow an attacker to gain full system control and misuse it to access or manipulate connected networks and resources.

Critical infrastructure sectors: Energy

Countries/areas deployed: Worldwide

Company headquarters location: United States

Recommended Practices: CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.

Recommended Practices: Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.

Recommended Practices: Locate control system networks and remote devices behind firewalls and isolating them from business networks.

Recommended Practices: When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

Recommended Practices: CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

Recommended Practices: CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

Recommended Practices: CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Recommended Practices: Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Recommended Practices: Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

Recommended Practices: No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.

CVE-2026-12562

8.8 (High)


                        
                          CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-306 - Missing Authentication for Critical Function

Affected products

Known affected 2 products

Product	Identifier	Version	Remediation
Toptech Systems RCU II+: <2025-11-24 Toptech Systems / RCU II+		<2025-11-24	Mitigation Mitigation fix Mitigation fix Mitigation Mitigation fix Mitigation Mitigation fix Mitigation fix
Toptech Systems Multiload II+: <2025-11-24 Toptech Systems / Multiload II+		<2025-11-24	Mitigation Mitigation fix Mitigation fix Mitigation Mitigation fix Mitigation Mitigation fix Mitigation fix

References

15 references

URL	Category
https://raw.githubusercontent.com/cisagov/CSAF/de…	self
https://www.cisa.gov/news-events/ics-advisories/i…	self
https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-…	external
https://www.cisa.gov/resources-tools/resources/ic…	external
https://www.cisa.gov/sites/default/files/publicat…	external
https://www.cisa.gov/topics/industrial-control-systems	external
https://www.cisa.gov/news-events/ics-alerts/ics-a…	external
https://www.cisa.gov/sites/default/files/recommen…	external
https://www.cisa.gov/news-events/news/targeted-cy…	external
https://www.cisa.gov/secure-our-world/teach-emplo…	external
https://www.cisa.gov/news-events/news/avoiding-so…	external
https://cwe.mitre.org/data/definitions/306.html	external
https://www.cve.org/CVERecord?id=CVE-2026-12562	external
https://www.first.org/cvss/calculator/3.1#CVSS:3.…	external
https://www.first.org/cvss/calculator/4.0#CVSS:4.…	external

Acknowledgments

Southwest Research Institute Donald Green

JSON

To clipboard

{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Donald Green"
        ],
        "organization": "Southwest Research Institute",
        "summary": "reported this vulnerability to CISA"
      }
    ],
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Disclosure is not limited",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.cisa.gov/news-events/news/traffic-light-protocol-tlp-definitions-and-usage"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy \u0026 Use policy (https://www.cisa.gov/privacy-policy).",
        "title": "Legal Notice and Terms of Use"
      },
      {
        "category": "summary",
        "text": "Successful exploitation of this vulnerability could allow an attacker to gain full system control and misuse it to access or manipulate connected networks and resources.",
        "title": "Advisory Summary"
      },
      {
        "category": "other",
        "text": "Energy",
        "title": "Critical infrastructure sectors"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries/areas deployed"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company headquarters location"
      },
      {
        "category": "general",
        "text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Locate control system networks and remote devices behind firewalls and isolating them from business networks.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
        "title": "Recommended Practices"
      },
      {
        "category": "general",
        "text": "No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.",
        "title": "Recommended Practices"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "central@cisa.dhs.gov",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "ICS Advisory ICSA-26-211-03 JSON",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2026/icsa-26-211-03.json"
      },
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        "url": "https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-03"
      },
      {
        "category": "external",
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        "url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
      },
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        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/topics/industrial-control-systems"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing"
      },
      {
        "category": "external",
        "summary": "Recommended Practices",
        "url": "https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks"
      }
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    "title": "Toptech Systems RCU II+ and Multiload II+",
    "tracking": {
      "current_release_date": "2026-07-30T06:00:00.000000Z",
      "generator": {
        "date": "2026-07-29T18:50:50.800877Z",
        "engine": {
          "name": "CISA CSAF Generator",
          "version": "1.0.0"
        }
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      "id": "ICSA-26-211-03",
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          "number": "1",
          "summary": "Initial Publication"
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  "product_tree": {
    "branches": [
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        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c2025-11-24",
                "product": {
                  "name": "Toptech Systems RCU II+: \u003c2025-11-24",
                  "product_id": "CSAFPID-0001"
                }
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            ],
            "category": "product_name",
            "name": "RCU II+"
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        "id": "CWE-306",
        "name": "Missing Authentication for Critical Function"
      },
      "notes": [
        {
          "category": "summary",
          "text": "The RCU II+ and Multiload II+ are vulnerable to an unauthenticated service that exposes a debug interface granting full root-level access to the embedded system. This vulnerability stems from a network-accessible port running a Target Communications Framework (TCF) service that does not require any authentication, allowing an attacker to directly interact with the Linux environment that powers the device. Once connected, an attacker can freely view and modify the filesystem, manipulate running processes, and control network interfaces, enabling deep alteration of system behavior.",
          "title": "Vulnerability Summary"
        },
        {
          "category": "details",
          "text": "SSVCv2/E:N/A:N/2026-07-29T06:00:00.000000Z",
          "title": "SSVC"
        }
      ],
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        "known_affected": [
          "CSAFPID-0001",
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "cwe.mitre.org",
          "url": "https://cwe.mitre.org/data/definitions/306.html"
        },
        {
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          "summary": "www.cve.org",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-12562"
        },
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          "url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        },
        {
          "category": "external",
          "summary": "www.first.org",
          "url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "remediations": [
        {
          "category": "mitigation",
          "details": "Toptech Systems provides two methods for remediating affected RCU II+ and Multiload II+ units: First, move the device to a closed or segmented network without untrusted access.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "Run one of the RCU II+/Multiload II+ Vulnerability Removal Tools (VRT) available at https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip, https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz.  *-* This option does not require breaking Weights and Measures seals and has the least operational impact.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip"
        },
        {
          "category": "mitigation",
          "details": "Run one of the RCU II+/Multiload II+ Vulnerability Removal Tools (VRT) available at https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.zip, https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz.  *-* This option does not require breaking Weights and Measures seals and has the least operational impact.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/rcuiip_mliip_vrt.gz"
        },
        {
          "category": "mitigation",
          "details": "This option does not require breaking Weights and Measures seals and has the least operational impact.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "Install the latest firmware from https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/.  *-* This method requires stopping the bay and breaking the W\u0026M seal. Be sure to back up the current ML configuration before performing the firmware update.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://s3.amazonaws.com/docs.toptech.com/index.html#downloads/Firmware/RCUII+_MLII+_SMPII+/"
        },
        {
          "category": "mitigation",
          "details": "This method requires stopping the bay and breaking the W\u0026M seal. Be sure to back up the current ML configuration before performing the firmware update.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        },
        {
          "category": "mitigation",
          "details": "For questions, contact Toptech Systems Support at security@toptech.com. Additional details are available in Toptech System\u0027s firmware vulnerability notice: https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "mailto:security@toptech.com"
        },
        {
          "category": "mitigation",
          "details": "For questions, contact Toptech Systems Support at security@toptech.com. Additional details are available in Toptech System\u0027s firmware vulnerability notice: https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf.",
          "product_ids": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ],
          "url": "https://s3.amazonaws.com/docs.toptech.com/nonpublic/2025%2012%2001%20RCU%20IIPlus%20MultiLoad%20IIPlus%20Vulnerability%20Notice.pdf"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001",
            "CSAFPID-0002"
          ]
        }
      ]
    }
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-12562 (GCVE-0-2026-12562)

GHSA-W374-9VQX-5HR2

ICSA-26-211-03

Tags

Sightings

Nomenclature