CVE-2026-57446

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.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3cd
https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p
https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p

Configurations

No configuration.

History

28 Oct 2026, 19:17

Type	Values Removed	Values Added
References	~~() https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p -~~	() https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p -

16 Oct 2026, 16:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 16:18

Updated : 2026-10-28 19:17

NVD link : CVE-2026-57446

Mitre link : CVE-2026-57446

CVE.ORG link : CVE-2026-57446

JSON object : View

Products Affected

No product.

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

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