Is CVE-2026-68906 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-68906 being exploited in the wild.

How severe is CVE-2026-68906?

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-2026-68906?

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-2026-68906 attacked?

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

Am I affected by CVE-2026-68906?

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-2026-68906: libIEC61850 infinite loop in ACSE parseUserInformation

CVE-2026-68906 · Severity: info · Published 2026-10-16

libIEC61850 is a library implementing industrial control protocols used in power systems and critical infrastructure. A remote attacker can crash or cause severe CPU consumption by sending a specially crafted network message during the initial connection phase, disrupting critical infrastructure operations.

Technologies: MZ Automation libIEC61850. Vendors: MZ Automation.

Quick answers

Is CVE-2026-68906 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-68906 being exploited in the wild.
How severe is CVE-2026-68906?: 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-2026-68906?: 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-2026-68906 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-68906?: 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

The vulnerability is an infinite loop and out-of-bounds read in the ACSE parseUserInformation function in acse.c. When parsing a truncated long-form length field in an AARE PDU, the code checks for zero length before validating a negative buffer position, allowing an infinite parsing loop or one-byte out-of-bounds memory access when the preceding byte is inaccessible. An unauthenticated remote peer can trigger this via a malformed AARE PDU during association.

Affected products

mz-automation libIEC61850 before 1.6.2

Timeline

2026-10-16: disclosed

References

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