CVE-2026-18626

Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers.

MEDIUM

6.8

CVSS Score

Published: September 22, 2026 at 05:50 PM UTC

Updated: September 22, 2026 at 07:51 PM UTC

1 product affected across 1 vendorConnext Professional

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Severity

MEDIUM6.8

Exploit prediction

EPSS 0.1%

SSVC

No known exploit

Description

Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overread 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 5.0.0 before 5.1.*.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Connext Professional · Rti

95%

5.0.0 ≤ v < 5.1.*5.2.0 ≤ v < 5.2.*5.3.0 ≤ v < 5.3.*6.0.0 ≤ v < 6.0.*6.1.0 ≤ v < 6.1.*7.0.0 ≤ v < 7.3.1.67.4.0 ≤ v < 7.7.0.15.0.0 5.2.0 5.3.0 6.0.0 6.1.0 7.0.0 7.4.0

Affected range stops below 5.1.*, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.2.*, so it looks safe — our inference, not a vendor statement

Affected range stops below 5.3.*, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.*, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.*, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.3.1.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.7.0.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord

https://www.rti.com/vulnerabilities/#cve-2026-18626

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.8MEDIUMRTI

Vector?

Quick Info

StatusAWAITING ANALYSIS

CWE

CWE-125

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