CVE WatchOct 16, 2026

CVE-2026-57446

libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. F

CVSS

5.3

Medium

EPSS

0.4%

p33

KEV

—

Exploit Today

0-100

Published: Oct 16, 2026 · Last modified: Oct 16, 2026 · CWE-415 · CWE-664 · CWE-672

EPSS · 30d

0.4%EPSS · 30 days0.4%

2026-10-172026-10-19

Technical description

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.

Official references

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