CVE-2026-49035

HIGH 8.1

Stack-based Buffer Overflow in MZ Automation libIEC61850

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-122
Vendor	mz automation
Product	libiec61850
Published	Jul 23, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

MZ Automation / libIEC61850

1.0.0 ≤ 1.6.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Abhinav Agarwal reported this vulnerability to CISA