Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.This issue affects Connext Micro: from 4.0.0 before 4.3.0.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00276.

Exploitation none

Automatable yes

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
RTI Connext Micro unaffected
Version Status Constraints
4.0.0 affected < 4.3.0

No data.

No data.

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Project Subscriptions

Vendors Products
Rti Subscribe
Connext Micro Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.rti.com/vulnerabilities/#cve-2026-30803 cve-icon
History

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Description Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.This issue affects Connext Micro: from 4.0.0 before 4.3.0.
Title Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.
First Time appeared Rti
Rti connext Micro
Weaknesses CWE-191
CPEs cpe:2.3:a:rti:connext_micro:*:*:*:*:*:*:*:*
Vendors & Products Rti
Rti connext Micro
References
Metrics cvssV4_0

{'score': 8.8, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N'}

ssvc

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: RTI

Published:

Updated: 2026-06-17T17:58:17.787Z

Reserved: 2026-03-05T14:43:37.192Z

Link: CVE-2026-30803

cve-icon Vulnrichment

Updated: 2026-06-17T17:58:13.988Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses