External risk intelligence

RTI Connext Professional Heap-Based Buffer Overflow

CVE advisorySeverity: CRITICAL (CVSS 9.2)

CVE-2026-2467

A heap-based buffer overflow vulnerability in RTI Connext Professional core libraries could allow for overflow variables and tags. This issue affects multiple versions of the software, which is used for real-time data distribution and may be reachable via network threats. It is uncertain if this technology is in use or

Buffer Overflow

Halo Surface Signal

Very unlikely · external exposure

1Halo Surface Signal

RTI Connext is middleware used for embedded systems, industrial IoT, and real-time data distribution within internal or specialized networks. It is not typically deployed as an internet-facing service, and its components are generally isolated from public network access in common operational technology and development environments.

Horizon Alert

Summary of the vulnerability and why it matters

A critical vulnerability has been identified in RTI Connext Professional's core libraries that could allow for overflow variables and tags. This issue affects multiple versions of the software, which is utilized in real-time data distribution systems. The primary concern at this stage is to confirm if this technology is in use within our environment and to what extent it may be exposed.

  • A library flaw allows unauthorized data overflow.
  • Confirming its use is essential for risk assessment.
  • Prioritize understanding where this technology resides.

Attack Path

How an attacker could exploit the issue

An attacker could reach this vulnerability by sending specially crafted data over the network to the vulnerable component. This could lead to an attacker being able to overwrite memory, potentially causing instability or allowing for further malicious actions.

  • No specific entry conditions or authentication required.
  • Triggered by sending malformed network data.
  • Allows for memory corruption and instability.

Live Threat

Current exploitation, exposure, and threat context

A heap-based buffer overflow vulnerability in RTI Connext Professional's Core Libraries could allow for the overflow of variables and tags. This could affect systems that use Connext Professional for real-time data distribution, potentially impacting service behavior when exposed to network threats.

  • System variables and tags at risk.
  • Overflow may occur via network input.
  • Could lead to denial of service.

Operational Fix

Recommended remediation, mitigation, and detection steps

The RTI Connext Professional Core Libraries are likely managed by platform or infrastructure teams, with potential coordination needed from vendor-management for updates. The immediate first step is to identify all instances of the affected software, assess their network exposure and business criticality, and confirm the accountable owner for remediation planning.

  • Platform/Infrastructure teams own remediation.
  • Verify software presence and exposure.
  • Plan risk-based maintenance actions.

Supplementary metadata

PCI scan relevance

Yes

CVE-2026-2467 — Halo PCI Relevance: Yes. Under typical PCI ASV external scan criteria, this issue may be flagged for scan prioritization.

A critical Heap-based Buffer Overflow in RTI Connext Professional allows for overflow variables and tags, potentially causing an ASV scan failure.

Scan-prioritization guidance only—not a PCI DSS certification or ASV attestation.

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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Frequently asked questions

What is RTI Connext Professional?

RTI Connext Professional is a middleware platform built on the Data Distribution Service standard. It enables real-time data exchange, allowing different software components to communicate efficiently. Engineers frequently deploy it in high-performance environments like industrial IoT, robotics, and embedded systems where low-latency messaging between distributed nodes is critical for operational stability.

What does CVE-2026-2467 mean for memory safety?

This CVE identifies a heap-based buffer overflow, categorized as CWE-122. In plain terms, the software fails to properly check the size of incoming data before copying it into a reserved area of memory called the heap. By sending specifically crafted inputs, an attacker could force the application to overwrite adjacent memory, potentially corrupting system variables or tags and causing the program to behave unpredictably or crash.

How is this buffer overflow triggered?

The vulnerability is triggered when the vulnerable library processes malformed data received over the network. It does not require the attacker to have pre-existing authentication or specialized credentials to initiate the process. Simply sending the malicious packet to the component is sufficient. Note that the flaw involves internal variable handling and is not triggered by standard, well-formed traffic patterns.

Is my system at risk according to Halo Surface Signal?

Halo Surface Signal labels this threat as very unlikely for many environments. Because RTI Connext is typically utilized for specialized, real-time data distribution, it is rarely deployed as an internet-facing service. Most installations exist within isolated, internal, or operational technology networks, which naturally limits the ability of external actors to reach the vulnerable component directly.

How should I respond to this vulnerability?

Your first step is to locate where RTI Connext Professional is installed across your infrastructure. Once identified, evaluate the criticality of the affected systems and their specific network placement. Coordinate with the platform or infrastructure teams responsible for these environments to review the vendor's guidance, confirm which specific versions you are running, and begin planning for necessary software updates.

References

Sources and related resources

Primary sources: NVD, CVE.org.

NVDPublished