CVE-2026-68907Public exploitNetwork attack vectorHinoki check available

Server crash via reversed dataset-copy arguments

Published Oct 16, 2026 · Updated Oct 16, 2026

An out-of-bounds read in libIEC61850 before 1.6.2 allows remote attackers to crash MMS servers via dataset-creation requests. The checkDataSetAccess function reverses StringUtils_copyStringToBuffer arguments for association-specific datasets, causing strlen to scan uninitialized stack storage beyond its bounds and copying those bytes into the caller's listName buffer. Exploitation requires dynamic dataset service and an installed dataset access handler; demonstrated impact is denial of service with caller stack corruption, not established code execution.

CVSS severityUnavailable
Unscored
EPSS probability0.37%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

An out-of-bounds read in libIEC61850 before 1.6.2 allows remote attackers to crash MMS servers via dataset-creation requests. The checkDataSetAccess function reverses StringUtils_copyStringToBuffer arguments for association-specific datasets, causing strlen to scan uninitialized stack storage beyond its bounds and copying those bytes into the caller's listName buffer. Exploitation requires dynamic dataset service and an installed dataset access handler; demonstrated impact is denial of service with caller stack corruption, not established code execution.

The record

CVE
CVE-2026-68907
Published
Oct 16, 2026
Updated
Oct 16, 2026
Vendor
MZ Automation GmbH
Product
libIEC61850
Classifications
CWE-125, CWE-628, CWE-457, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 16, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MZ Automation GmbH · libIEC61850version=< 1.6.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-628Function Call with Incorrectly Specified Arguments
CWE-457Use of Uninitialized Variable
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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