CVE-2026-57446

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Source

https://cve.org/CVERecord?id=CVE-2026-57446

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57446.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-57446

Aliases

GHSA-cxgr-7v9h-fj9p

Published

2026-10-16T15:46:33Z

Modified

2026-10-17T02:48:23Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

libIEC61850: Server-side double free in MMS ObtainFile task reuse due to stale FILE* handle

Details

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.

Database specific

{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-415",
        "CWE-664",
        "CWE-672"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57446.json"
}

References

Affected packages

Git / github.com/mz-automation/libiec61850

Affected ranges

Type

GIT

Repo

https://github.com/mz-automation/libiec61850

Events

Introduced

a13961110b8238d2d8ea577c1fb7592ba3017ad8

Fixed

f0f797bf955da763353f7081c892a1ff6b55e5a1

Database specific

Show details

{
    "extracted_events":  [
        {
            "introduced":  "1.6.1"
        },
        {
            "fixed":  "1.6.2"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Affected versions

v1.*

v1.6.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57446.json"