What’s Vulnerable › Vulnerabilities

CVE-2026-49035: Stack-based Buffer Overflow in MZ Automation libIEC61850

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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-122

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.

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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