What’s Vulnerable › Vulnerabilities

CVE-2026-50039: Stack-based Buffer Overflow in MZ Automation libIEC61850

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-23 · updated 2026-10-24
• Weakness: CWE-121

Description

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.

Affected products

• mz-automation libiec61850: from 1.0.0 through 1.6.1

References

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

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