CODESYS reports all CODESYS V2 web servers running stand-alone or as part of the CODESYS runtime system: prior to Version 1.1.9.20 are affected

productUS

A product tracked in the threat graph; the vulnerabilities below are known to affect it.

KEV-listed

public exploit

EPSS ≥ 10%

by severity

4critical1high0medium0low

updated 2026-10-28

vulnerabilities (5)

Related CVEs.

sort

ID	severity	EPSS	exploitable	patched	published	affected
CVE-2021-30189US	critical9.8	1.24% (69th)	—	no fix	2021-05-25	—
CVE-2021-30193US	critical9.8	1.12% (66th)	—	no fix	2021-05-25	—
CVE-2021-30192US	critical9.8OT elevated	1.12% (66th)	—	no fix	2021-05-25	—
CVE-2021-30194US	critical9.1	1.12% (66th)	—	no fix	2021-05-25	—
CVE-2021-30191US	high7.5	0.99% (62nd)	—	no fix	2021-05-25	—

The flaw types (CWEs) most of these CVEs share.

CWE-787Out-of-bounds Write2 CVEs
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')1 CVEs
CWE-121Stack-based Buffer Overflow1 CVEs
CWE-125Out-of-bounds Read1 CVEs
CWE-358Improperly Implemented Security Check for Standard1 CVEs
CWE-863Incorrect Authorization1 CVEs

Which sources assert this record, and when.

scry

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