What’s Vulnerable › Vulnerabilities

CVE-2022-21159

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-04-15 · updated 2026-06-17
• Weakness: CWE-835

Description

A denial of service vulnerability exists in the parseNormalModeParameters functionality of MZ Automation GmbH libiec61850 1.5.0. A specially-crafted series of network requests can lead to denial of service. An attacker can send a sequence of malformed iec61850 messages to trigger this vulnerability.

Affected products

• mz-automation libiec61850: 1.5.0

References

• https://github.com/mz-automation/libiec61850/commit/cfa94cbf10302bedc779703f874ee2e8387a0721
• https://talosintelligence.com/vulnerability_reports/TALOS-2022-1467
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1467
• https://github.com/mz-automation/libiec61850/commit/cfa94cbf10302bedc779703f874ee2e8387a0721
• https://talosintelligence.com/vulnerability_reports/TALOS-2022-1467
• https://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1467

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