CVE-2026-19206

MEDIUM

MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflow

Title source: cna
STIX 2.1

Description

A security flaw has been discovered in MZ Automation libiec61850 up to 1.6.1. This affects the function SVReceiver_stopThreadless of the file src/sampled_values/sv_subscriber.c of the component ASDU Element Handler. Performing a manipulation results in heap-based buffer overflow. The attack must be initiated from a local position. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to mitigate this issue. The patch is named a96bd674e0238276dd1387d31d52e55229d0771e. The affected component should be upgraded.

References (8)

Core 8
Core References
Vdb Entry, Technical Description vdb-entry technical-description
VDB-386950 | MZ Automation libiec61850 ASDU Element sv_subscriber.c SVReceiver_stopThreadless heap-based overflow
https://vuldb.com/vuln/386950
Signature, Permissions Required signature permissions-required
VDB-386950 | CTI Indicators (IOB, IOC, IOA)
https://vuldb.com/vuln/386950/cti
Third Party Advisory third-party-advisory
CVE-2026-19206 | CVE Analysis and Report
https://vuldb.com/cve/CVE-2026-19206
Third Party Advisory third-party-advisory
Submit #864840 | MZ Automation libiec61850 1.6.1 Memory Corruption (heap-buffer-overflow)
https://vuldb.com/submit/864840

Scores

CVSS v3 5.3
EPSS 0.0016
EPSS Percentile 6.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-119 CWE-122
Status published
Products (3)
MZ Automation/libiec61850 1.6.0
MZ Automation/libiec61850 1.6.1
MZ Automation/libiec61850 1.6.2
Published Aug 07, 2026
Tracked Since Aug 07, 2026