CVE-2026-57446
mediumlibIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session.
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/mz-automation/libiec61850/commit/d86b4a9c7a903641819235e1678b18901518f3... security-advisories@github.com
- https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2 security-advisories@github.com
- https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p security-advisories@github.com
- https://github.com/mz-automation/libiec61850/security/advisories/GHSA-cxgr-7v9h-fj9p 134c704f-9b21-4f2e-91b3-4a467353bcc0