{"cve":"CVE-2021-33486","nvd":{"published":"2021-08-03T16:15:08.617","modified":"2026-06-17T03:54:39.580","status":"Modified","description":"All versions of the CODESYS V3 Runtime Toolkit for VxWorks from version V3.5.8.0 and before version V3.5.17.10 have Improper Handling of Exceptional Conditions.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-755"],"references":["https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14806&token=637e12e86301b83beac1653bd88da3aa5aa3f51b&download=","https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=14806&token=637e12e86301b83beac1653bd88da3aa5aa3f51b&download="],"products":["codesys:runtime_toolkit"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-33486","score":0.00961,"percentile":0.61599,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}