{"cve":"CVE-2026-66369","nvd":{"published":"2026-07-30T23:16:53.377","modified":"2026-09-03T17:58:18.790","status":"Deferred","description":"The GOOSE parser contains an off-by-one boundary-handling flaw that can \nbe triggered by a single unauthenticated Layer-2 multicast frame on the \nprocess bus. When specific GOOSE message fields are processed, the \nparser advances its internal buffer position incorrectly, resulting in a\n heap out-of-bounds read. On affected platforms, this condition reliably\n terminates the subscriber process and causes a denial-of-service.","cvss_v4":{"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-125"],"references":["https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-211-10.json","https://www.cisa.gov/news-events/ics-advisories/icsa-26-211-10"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:47:10.050265369+00:00"},"epss":{"cve":"CVE-2026-66369","score":0.00285,"percentile":0.21043,"date":"2026-10-31"},"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."]}