CVE-2026-57446 (GCVE-0-2026-57446)

Vulnerability from cvelistv5 – Published: 2026-10-16 15:46 – Updated: 2026-10-16 15:46
VLAI
Title
libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle
Summary
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. From 1.6.1 until 1.6.2, a successful MMS ObtainFile operation closes MmsObtainFileTask::fileHandle but leaves the stale non-NULL value in a task marked MMS_FILE_UPLOAD_STATE_NOT_USED. If a later ObtainFile request reuses that task and destination creation fails, MMS_FILE_UPLOAD_STATE_SEND_OBTAIN_FILE_ERROR_DESTINATION cleanup closes the stale FILE object again. Servers with the MMS file service and ObtainFile enabled can therefore be crashed remotely by the success-then-failure request sequence. This issue is fixed in version 1.6.2.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-415 - Double Free
  • CWE-664 - Improper Control of a Resource Through its Lifetime
  • CWE-672 - Operation on a Resource after Expiration or Release
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
mz-automation libiec61850 Affected: >= 1.6.1, < 1.6.2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "libiec61850",
          "vendor": "mz-automation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.6.1, \u003c 1.6.2"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. From 1.6.1 until 1.6.2, a successful MMS ObtainFile operation closes MmsObtainFileTask::fileHandle but leaves the stale non-NULL value in a task marked MMS_FILE_UPLOAD_STATE_NOT_USED. If a later ObtainFile request reuses that task and destination creation fails, MMS_FILE_UPLOAD_STATE_SEND_OBTAIN_FILE_ERROR_DESTINATION cleanup closes the stale FILE object again. Servers with the MMS file service and ObtainFile enabled can therefore be crashed remotely by the success-then-failure request sequence. This issue is fixed in version 1.6.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-415",
              "description": "CWE-415: Double Free",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-664",
              "description": "CWE-664: Improper Control of a Resource Through its Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-672",
              "description": "CWE-672: Operation on a Resource after Expiration or Release",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-16T15:46:33.549Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p"
        },
        {
          "name": "https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd"
        },
        {
          "name": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"
        }
      ],
      "source": {
        "advisory": "GHSA-cxgr-7v9h-fj9p",
        "discovery": "UNKNOWN"
      },
      "title": "libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57446",
    "datePublished": "2026-10-16T15:46:33.549Z",
    "dateReserved": "2026-06-24T13:21:20.730Z",
    "dateUpdated": "2026-10-16T15:46:33.549Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "libiec61850",
                "vendor": "mz-automation",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 1.6.1, \u003c 1.6.2"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. From 1.6.1 until 1.6.2, a successful MMS ObtainFile operation closes MmsObtainFileTask::fileHandle but leaves the stale non-NULL value in a task marked MMS_FILE_UPLOAD_STATE_NOT_USED. If a later ObtainFile request reuses that task and destination creation fails, MMS_FILE_UPLOAD_STATE_SEND_OBTAIN_FILE_ERROR_DESTINATION cleanup closes the stale FILE object again. Servers with the MMS file service and ObtainFile enabled can therefore be crashed remotely by the success-then-failure request sequence. This issue is fixed in version 1.6.2."
          }
        ],
        "id": "CVE-2026-57446",
        "lastModified": "2026-10-16T20:04:29.760",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "LOW",
                "baseScore": 5.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                "version": "3.1"
              },
              "exploitabilityScore": 3.9,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-16T16:18:44.207",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-415"
              },
              {
                "lang": "en",
                "value": "CWE-664"
              },
              {
                "lang": "en",
                "value": "CWE-672"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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