What is CVE-2026-50039?

CVE-2026-50039 is a high-severity vulnerability in Mz Automation Libiec61850, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-07-23.

How severe is CVE-2026-50039?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Mz Automation Libiec61850

CVE-2026-50039

The affected product is vulnerable to a stack-based buffer overflow, which may allow an attacker to cause a memory corruption via a Read Request.

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mz Automation Libiec61850 — versions 1.0.0

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

ics-cert@hq.dhs.gov (government-resource)

Frequently asked questions

What is CVE-2026-50039?: CVE-2026-50039 is a high-severity vulnerability in Mz Automation Libiec61850, classified under Stack-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-07-23.
How severe is CVE-2026-50039?: High severity. CVSS v3 base score is 7.5 out of 10.