{"id":"CVE-2026-7866","title":"Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers","summary":"Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from …","severity":"critical","cvss":10,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","cwe":["CWE-121"],"vendor":"RTI","product":"connext_professional","affected":["connext_professional >= 7.4.0 < 7.7.0.1","connext_professional >= 7.0.0 < 7.3.1.6","connext_professional >= 6.1.0 < 6.1.*","connext_professional >= 6.0.0 < 6.0.*","connext_professional >= 5.3.0 < 5.3.*","connext_professional >= 5.2.0 < 5.2.*","connext_professional >= 4.3x < 5.1.*"],"published":"2026-09-22","updated":"2026-09-23","sourceUpdated":"2026-09-23T04:17:46.510","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-7866","references":[{"url":"https://www.rti.com/vulnerabilities/#cve-2026-7866","label":"3f572a00-62e2-4423-959a-7ea25eff1638"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"total","timestamp":"2026-09-22T19:05:47.009185Z"},"cvssSource":"cna","ingestedAt":"2026-09-22T18:08:12.482Z","epss":0.00311,"epssPercentile":0.24208,"slug":"CVE-2026-7866","body":"## Overview\n\nStack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.0 before 5.2.*, from 4.3x before 5.1.*.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":55,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}