{"id":"CVE-2026-7300","title":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow","summary":"Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow. This issue affects Connext Professional: from 7.4.0…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-120"],"vendor":"rti","product":"connext_professional","affected":["connext_professional >= 6.1.2, < 7.4.0"],"patched":["connext_professional 7.4.0"],"published":"2026-06-17","updated":"2026-09-22","sourceUpdated":"2026-09-22T18:17:19.783","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-7300","references":[{"url":"https://www.rti.com/vulnerabilities/#cve-2026-7300","label":"3f572a00-62e2-4423-959a-7ea25eff1638"}],"tags":["nvd","cve.org","score-dispute"],"epss":0.00251,"epssPercentile":0.16809,"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-06-17T18:00:26.868901Z"},"scores":{"nvd":6.5,"cna":8.8},"ingestedAt":"2026-09-22T18:08:12.481Z","slug":"CVE-2026-7300","body":"## Overview\n\nBuffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in RTI Connext Professional (Web Integration Service) allows Filter Failure through Buffer Overflow. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.3, from 6.1.2 before 6.1.*.\n\n## Affected\n\n- `connext_professional >= 6.1.2, < 7.4.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `connext_professional 7.4.0`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":209310,"id":"CVE-2026-7300","ts":1790104185791,"field":"cvss","old":"8.8","new":"6.5"},{"seq":209309,"id":"CVE-2026-7300","ts":1790104185791,"field":"severity","old":"high","new":"medium"}]}