CVE-2026-68908 (GCVE-0-2026-68908)

Vulnerability from cvelistv5 – Published: 2026-10-16 15:47 – Updated: 2026-10-16 16:51
VLAI
Title
libIEC61850: Oversized RptID can trigger invalid free of a stack-backed visible string in the report send path
Summary
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, Reporting_RCBWriteAccessHandler accepts an RptID longer than 129 bytes in the report-control-block write path. When GI later causes sendNextReportEntrySegment to serialize the report, the function wraps rptIdBuf[130] as a temporary MmsValue and passes it to MmsValue_setVisibleString. The setter's resize path frees the stack-backed buffer, allowing a remote client to trigger an invalid free and server crash by writing the oversized RptID and then generating a report. This issue is fixed in version 1.6.2.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 16:51 UTC
CWE
  • CWE-590 - Free of Memory not on the Heap
  • CWE-664 - Improper Control of a Resource Through its Lifetime
  • CWE-763 - Release of Invalid Pointer or Reference
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7771 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
mz-automation libiec61850 Affected: < 1.6.2
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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