by Kastro
Paper/Archive/CVE-2026-7866

CVE-2026-7866

RTI Connext Professional — Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.

EPSS 0.3%CVSS 10.0
critical.is priorityof 100
35
CVSS 10.0 (CNA)10.0 / 10 × 3030.0Not in CISA KEV+300.0EPSS percentile 24.0.240 × 204.8No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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 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.*.

Affected

ProductAffectedFixed inSource
Connext Professional7.4.0 – < 7.7.0.17.7.0.1CNA
Connext Professional7.0.0 – < 7.3.1.67.3.1.6CNA
Connext Professional6.1.0 – < 6.1.*6.1.*CNA
Connext Professional6.0.0 – < 6.0.*6.0.*CNA
Connext Professional5.3.0 – < 5.3.*5.3.*CNA
Connext Professional5.2.0 – < 5.2.*5.2.*CNA
Connext Professional4.3x – < 5.1.*5.1.*CNA

Scores by source

RTI (CNA)10.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refrti.com/vulnerabilities/#cve-2026-7866