CVE-2026-7866

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

State: Published
Severity: 10.0 Critical
Published: Sep 22, 2026
Updated: Sep 23, 2026
Reserved: May 5, 2026

Description

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.*.

Scores

CVSS	Score	Vector	Source
4.0	10.0 Critical	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	RTI
4.0	9.3 Critical	CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	RTI

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
Connext ProfessionalRTI	7.4.0 to before 7.7.0.1Affected 7.0.0 to before 7.3.1.6Affected 6.1.0 to before 6.1.Affected 6.0.0 to before 6.0.Affected 5.3.0 to before 5.3.Affected 5.2.0 to before 5.2.Affected 4.3x to before 5.1.*Affected

References

https://www.rti.com/vulnerabilities/#cve-2026-7866

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