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.*.
Published: 2026-09-22
Score: 9.3 Critical
EPSS: n/a
KEV: No
Impact: Code execution and denial of service via stack overflow
Action: Patch Immediately
AI Analysis

Impact

This vulnerability is a stack-based buffer overflow in the core libraries of RTI Connext Professional. It allows an attacker to corrupt the execution stack when malformed data is processed. Such corruption can lead to the execution of arbitrary code or the denial of service by crashing the application.

Affected Systems

RTI:Connext Professional versions affected include 7.4.0 through 7.7.0.0, 7.0.0 through 7.3.1.5, 6.1.0 through 6.1.*, 6.0.0 through 6.0.*, 5.3.0 through 5.3.*, 5.2.0 through 5.2.*, and 4.3.x through 5.1.*. All earlier releases in these version ranges are vulnerable.

Risk and Exploitability

The CVSS score of 9.3 indicates a high severity. The EPSS score is not provided, so the exact exploitation probability is uncertain. The vulnerability is not listed in the CISA KEV catalog, but the high severity and common nature of buffer overflows suggest that attacks are plausible, especially if the affected component is exposed to external networks.

Generated by OpenCVE AI on September 22, 2026 at 19:47 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade RTI Connext Professional to version 7.7.0.1 or later, which contains the fix for this buffer overflow.
  • If upgrading to 7.7.0.1 is not immediately possible, upgrade to the latest available 7.3.1.6 or newer release that addresses the issue.
  • Apply all relevant vendor patches for RTI Connext Professional, ensuring that the stack bounds checking is restored.
  • Implement runtime mitigations such as enable stack canaries, address space layout randomization (ASLR), and data execution prevention (DEP) to reduce the risk of exploitation until a patch is deployed.

Generated by OpenCVE AI on September 22, 2026 at 19:47 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 22 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

 ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 22 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Tue, 22 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
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.*.
Title Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.
First Time appeared Rti
Rti connext Professional
Weaknesses CWE-121
CPEs cpe:2.3:a:rti:connext_professional:*:*:*:*:*:*:*:*
Vendors & Products Rti
Rti connext Professional
References
Metrics cvssV4_0

{'score': 9.3, 'vector': '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'}

Subscriptions

Rti Connext Professional
cve-icon MITRE

Status: PUBLISHED

Assigner: RTI

Published:

Updated: 2026-09-22T19:05:51.079Z

Reserved: 2026-05-05T13:54:48.225Z

Link: CVE-2026-7866

cve-icon Vulnrichment

Updated: 2026-09-22T18:52:40.316Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-22T18:17:19.940

Modified: 2026-09-22T19:37:36.747

Link: CVE-2026-7866

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T20:00:13Z

Weaknesses
  • CWE-121

    Stack-based Buffer Overflow