What’s Vulnerable › Vulnerabilities

CVE-2021-21778

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-25 · updated 2026-06-17
• Weakness: CWE-617

Description

A denial of service vulnerability exists in the ASDU message processing functionality of MZ Automation GmbH lib60870.NET 2.2.0. A specially crafted network request can lead to loss of communications. An attacker can send an unauthenticated message to trigger this vulnerability.

Affected products

• MZ Automation lib60870: 2.2.0

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1236
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1236

Get alerted when CVE-2021-21778 or the next vulnerability affects your stack