CVE-2026-68907
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including…
- Risk score
- 60/100
- CVSS
- 8.2 v4.0
- Exploit chance (30 days)
- 0.4%
- Published
- 16 Oct 2026
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What to know
- What it is
- 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.…
- Affected
- See advisory
- Fix
- Upgrade the product to 1.6.2 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 8.2 high
- Remotely exploitable without logging in
References
Original description
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.
Last activity 16 Oct 2026. Patch Forecast updates every hour.