CVE-2022-21159
CVSS v3
7.5
HIGH
EPSS Score
1.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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.
Technical details
- Published
- 2022-04-15
Frequently asked questions
What is CVE-2022-21159?
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.
Is CVE-2022-21159 actively exploited?
Active exploitation of CVE-2022-21159 has not been confirmed. Its EPSS score was 1.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-21159?
CVE-2022-21159 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2022-21159 affecting your environment?
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