{"id":"CVE-2026-85479","title":"The STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration","summary":"The STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and exchange data with it.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-306"],"published":"2026-10-09","updated":"2026-10-11","sourceUpdated":"2026-10-11T17:17:06.133","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85479","references":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-02.json","label":"ics-cert@hq.dhs.gov"},{"url":"https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-02","label":"ics-cert@hq.dhs.gov"}],"tags":["nvd","cve.org"],"epss":0.00252,"epssPercentile":0.16544,"ingestedAt":"2026-10-09T15:00:31.367Z","vendor":"Grid Protection Alliance","product":"openPDC","affected":["openPDC < 2.9.477","openPDC < 2.9.482","openpdc_docker_image < 2.9.477","openpdc_docker_image < 2.9.482","openHistorian < 2.8.580","openHistorian < 2.8.585"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-11T16:50:05.712828Z"},"slug":"CVE-2026-85479","body":"## Overview\n\nThe STTP-based data publisher on openPDC accepts network connections without authentication in its default configuration. An unauthenticated network attacker can connect to this interface and exchange data with it.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}