Vulnerability-Lookup

CVE-2026-19206 (GCVE-0-2026-19206)

Vulnerability from cvelistv5 – Published: 2026-08-07 13:45 – Updated: 2026-08-07 14:24 X_Open Source

Title

MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflow

Summary

A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.

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:O/RC:C

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:O/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

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

Assigner

VulDB

References

8 references

URL	Tags
https://vuldb.com/vuln/386950	vdb-entrytechnical-description
https://vuldb.com/vuln/386950/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-19206	third-party-advisory
https://vuldb.com/submit/864840	third-party-advisory
https://github.com/mz-automation/libiec61850/issues/598	exploitissue-tracking
https://github.com/mz-automation/libiec61850/issu…	issue-tracking
https://github.com/mz-automation/libiec61850/comm…	patch
https://github.com/mz-automation/libiec61850/rele…	patch

Impacted products

1 product

Vendor	Product	Version
MZ Automation	libiec61850	Affected: 1.6.0 Affected: 1.6.1 Unaffected: 1.6.2 cpe:2.3:a:mz_automation:libiec61850::::::::

Credits

Chuan Wei SCU_1CP (VulDB User) SCU_1CP (VulDB User)

Show details on NVD website

JSON

To clipboard

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GHSA-72V3-V5V5-6XX3

Vulnerability from github – Published: 2026-08-07 15:33 – Updated: 2026-08-07 15:33

Details

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

Show details on source website

JSON

To clipboard

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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-07T14:16:59Z",
    "severity": "LOW"
  },
  "details": "A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.",
  "id": "GHSA-72v3-v5v5-6xx3",
  "modified": "2026-08-07T15:33:18Z",
  "published": "2026-08-07T15:33:18Z",
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    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19206"
    },
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      "url": "https://github.com/mz-automation/libiec61850/issues/598"
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    },
    {
      "type": "WEB",
      "url": "https://github.com/mz-automation/libiec61850/commit/a96bd674e0238276dd1387d31d52e55229d0771e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-19206"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/864840"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/386950"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/386950/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"
    }
  ]
}

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-2026-19206 (GCVE-0-2026-19206)

GHSA-72V3-V5V5-6XX3

Tags

Sightings

Nomenclature