CVE-2021-30187

CVE-2021-30187 is a medium-severity vulnerability in Codesys Runtime Toolkit with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Description

CODESYS V2 runtime system SP before 2.4.7.55 has Improper Neutralization of Special Elements used in an OS Command.

Frequently asked questions

What is CVE-2021-30187?
CODESYS V2 runtime system SP before 2.4.7.55 has Improper Neutralization of Special Elements used in an OS Command.
How severe is CVE-2021-30187?
CVE-2021-30187 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2021-30187 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-30187?
CVE-2021-30187 primarily affects Codesys Runtime Toolkit. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-30187?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-30187 published?
CVE-2021-30187 was published on 2021-05-25 and last updated on 2026-06-17.

References

Affected products (28)

More vulnerabilities in Codesys Runtime Toolkit

All CVEs affecting Codesys Runtime Toolkit →

Other CWE-78 (OS Command Injection) vulnerabilities

Browse all CWE-78 (OS Command Injection) vulnerabilities →