CVE-2019-18858
CVSS v3
9.8
CRITICAL
EPSS Score
1.9 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.
Technical details
- Published
- 2019-11-20
Frequently asked questions
What is CVE-2019-18858?
CODESYS 3 web server before 3.5.15.20, as distributed with CODESYS Control runtime systems, has a Buffer Overflow.
Is CVE-2019-18858 actively exploited?
Active exploitation of CVE-2019-18858 has not been confirmed. Its EPSS score was 1.9% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-18858?
CVE-2019-18858 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2019-18858 affecting your environment?
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