Is CVE-2026-68907 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-68907 being exploited in the wild.

How severe is CVE-2026-68907?

Informational severity, published 16 October 2026.

Which products and versions are affected?

MZ Automation libIEC61850 before 1.6.2.

Is there a fix for CVE-2026-68907?

Yes: fixed in 1.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-68907 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-68907?

Check whether you run MZ Automation libIEC61850 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-68907: libIEC61850 buffer over-read in dataset access handler

CVE-2026-68907 · Severity: info · Published 2026-10-16

libIEC61850 is an open-source library implementing industrial power system protocols for control and protection systems. A remote attacker can crash servers running the MMS protocol with dynamic dataset services by sending a specially crafted defineNamedVariableList request, causing a denial-of-service that may disrupt critical grid operations. The vulnerability requires the server to have a dataset access handler installed but affects all exposed instances.

Technologies: MZ Automation libIEC61850. Vendors: MZ Automation.

Quick answers

Is CVE-2026-68907 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-68907 being exploited in the wild.
How severe is CVE-2026-68907?: Informational severity, published 16 October 2026.
Which products and versions are affected?: MZ Automation libIEC61850 before 1.6.2.
Is there a fix for CVE-2026-68907?: Yes: fixed in 1.6.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-68907 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-68907?: Check whether you run MZ Automation libIEC61850 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 1.6.2

Technical details

An off-by-one argument swap in checkDataSetAccess causes StringUtils_copyStringToBuffer to read from uninitialized stack memory (dataSetRef[130]) as a source string, then copies the over-read bytes into the caller's listName buffer. The vulnerability is triggered via remote MMS defineNamedVariableList requests on association or VMD-specific datasets; no authentication is required. While stack corruption is possible, the primary confirmed impact is denial of service through server crash.

Affected products

mz-automation libIEC61850 before 1.6.2

Timeline

2026-10-16: disclosed

References

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