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PatchSiren cyber security CVE debrief

CVE-2026-30802 RTI CVE debrief

CVE-2026-30802 is a high-severity Out-of-bounds Read vulnerability in RTI Connext Micro (Core Libraries). The issue allows for Overread Buffers and affects Connext Micro versions from 4.0.0 before 4.3.0. With a CVSS score of 8.8, this vulnerability poses a significant risk. Users of affected versions should take immediate action to mitigate potential threats. RTI has provided information on this vulnerability on their website. The CVE was published on June 17, 2026, and last modified on the same day.

Vendor
RTI
Product
Connext Micro
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-17
Original CVE updated
2026-07-08
Advisory published
2026-06-17
Advisory updated
2026-07-08

Who should care

Organizations using RTI Connext Micro (Core Libraries) versions 4.0.0 through 4.2.0 should prioritize patching this vulnerability. Given the high CVSS score of 8.8, this issue is critical for teams responsible for maintaining systems that utilize this software. The vulnerability's impact could lead to significant disruptions if exploited.

Technical summary

The CVE-2026-30802 vulnerability is classified as an Out-of-bounds Read issue within RTI Connext Micro (Core Libraries). This type of vulnerability typically occurs when a program attempts to read data from or write data to an incorrect location in memory, leading to potential crashes or data leakage. The specific weakness associated with this CVE is CWE-125. The vulnerability has been assessed with a CVSS score of 8.8, indicating a high level of severity. The vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/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 provides a detailed breakdown of the vulnerability's characteristics.

Defensive priority

High

Recommended defensive actions

  • Apply the patch or update to RTI Connext Micro version 4.3.0 or later.
  • Review and restrict network access to affected systems.
  • Monitor systems for unusual activity.
  • Implement additional security measures such as intrusion detection systems.
  • Regularly update and patch all software components.
  • Consider isolating critical systems.
  • Engage with RTI support for further guidance.

Evidence notes

The information provided is based on data from the NVD and CVE.org. The CVE was published and last modified on June 17, 2026. RTI has provided a reference for this vulnerability on their website.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-30802 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-30802

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-30802 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-30802

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://www.rti.com/vulnerabilities/

    3f572a00-62e2-4423-959a-7ea25eff1638

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.