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GHSA-36PQ-CX6X-RC54

Vulnerability from github – Published: 2026-08-08 09:30 – Updated: 2026-08-08 09:30

Details

A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function MmsMapping_varAccessSpecToObjectReference of the file src/iec61850/common/iec61850_common.c of the component MMS Protocol Workflow. Such manipulation of the argument GetNamedVariableListAttributesResponse.itemId leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Severity

5.3 (Medium)


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

1.9 (Low)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-19259"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-08T07:17:11Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been found in MZ Automation libiec61850 up to 1.6.1. The affected element is the function MmsMapping_varAccessSpecToObjectReference of the file src/iec61850/common/iec61850_common.c of the component MMS Protocol Workflow. Such manipulation of the argument GetNamedVariableListAttributesResponse.itemId leads to heap-based buffer overflow. The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "id": "GHSA-36pq-cx6x-rc54",
  "modified": "2026-08-08T09:30:21Z",
  "published": "2026-08-08T09:30:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19259"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mz-automation/libiec61850/issues/599"
    },
    {
      "type": "WEB",
      "url": "https://github.com/user-attachments/files/29190426/PoC.zip"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-19259"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/865176"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/387009"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/387009/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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"
    }
  ]
}

CVE-2026-19259 (GCVE-0-2026-19259)

Vulnerability from cvelistv5 – Published: 2026-08-08 06:00 – Updated: 2026-08-10 14:37

Title

MZ Automation libiec61850 MMS Protocol Workflow iec61850_common.c MmsMapping_varAccessSpecToObjectReference heap-based overflow

Summary

Severity

4.8 (Medium)


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

5.3 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

5.3 (Medium)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-10 14:29 UTC

CWE

CWE-122 - Heap-based Buffer Overflow
CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

6 references

URL	Tags
https://vuldb.com/vuln/387009	vdb-entrytechnical-description
https://vuldb.com/vuln/387009/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19259	third-party-advisory
https://vuldb.com/submit/865176	third-party-advisory
https://github.com/mz-automation/libiec61850/issues/599	issue-tracking
https://github.com/user-attachments/files/2919042…	exploit

Impacted products

1 product

Vendor	Product	Version
MZ Automation	libiec61850	Affected: 1.6.0 Affected: 1.6.1 cpe:2.3:a:mz_automation:libiec61850::::::::

Credits

Chuan Wei SCU_1CP (VulDB User) SCU_1CP (VulDB User) VulDB CNA Team

Show details on NVD website

JSON

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        "metrics": [
          {
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                "id": "CVE-2026-19259",
                "options": [
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                  },
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                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-10T14:29:04.065342Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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            "cpe:2.3:a:mz_automation:libiec61850:*:*:*:*:*:*:*:*"
          ],
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            "MMS Protocol Workflow"
          ],
          "product": "libiec61850",
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          "versions": [
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              "status": "affected",
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        },
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      ],
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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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-36PQ-CX6X-RC54

CVE-2026-19259 (GCVE-0-2026-19259)

Tags

Sightings

Nomenclature

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