CVE-2026-18583

A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms_mapping/mms_mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.

CVSS 4.0

5.5CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

CVSS 3.1

5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS

0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-25)

CWEs

CWE-119, CWE-125

Published

2026-08-03

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

References

• https://github.com/gff-cw/information/issues/3
• https://github.com/mz-automation/libiec61850/
• https://github.com/mz-automation/libiec61850/commit/062062daf4cb50c7aa76e01d6fb4d58fc9278a7d
• https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
• https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7v2x-39mw-2979

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