CVE-2026-68907

libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, checkDataSetAccess reverses the source and destination arguments to StringUtils_copyStringToBuffer while constructing an MMS_ASSOCIATION_SPECIFIC dataset reference. The helper treats uninitialized dataSetRef[130] storage as a source string, causing strlen to read beyond the stack buffer, and then copies those bytes into the caller-owned listName buffer. A remote defineNamedVariableList request can crash servers that have dynamic dataset service enabled and a dataset access handler installed; the advisory also observes caller stack corruption but establishes denial of service as the primary impact. This issue is fixed in version 1.6.2.

CVSS

No CVSS.

References

Link	Resource
https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d
https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979

Configurations

No configuration.

History

16 Oct 2026, 16:20

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-16 16:20

Updated : 2026-10-16 20:04

NVD link : CVE-2026-68907

Mitre link : CVE-2026-68907

CVE.ORG link : CVE-2026-68907

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

CWE-457

Use of Uninitialized Variable

CWE-628

Function Call with Incorrectly Specified Arguments

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