CVE-2026-49035

HIGH

Stack-based Buffer Overflow in MZ Automation libIEC61850

Title source: cna

Description

The affected product is vulnerable to a heap-based buffer overflow via a crafted MMS Initiate request. Remote code execution (RCE) has been demonstrated when ASLR is disabled; memory corruption or denial of service may occur in configurations where ASLR is enabled.

References (1)

Core 1

Core References

Government Resource government-resource

https://www.cisa.gov/news-events/ics-advisories/icsa-26-204-06

Scores

CVSS v3 8.1

EPSS 0.0037

EPSS Percentile 29.7%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-122

Status published

Products (1)

MZ Automation/libIEC61850 1.0.0 - 1.6.1

Published Jul 23, 2026

Tracked Since Jul 24, 2026