CVE-2026-18626

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.*.

Overview

State: PUBLISHED
Assigner (CNA): RTI
CVSS severity: MEDIUM
CVSS score: 6.8 / 10
CVSS vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Effective score: 6.8 / 10 MEDIUM source: CNA overview
CWE(s): CWE-125
Reserved: 2026-08-03
Published: 2026-09-22 17:50 UTC
Last updated: 2026-09-22 18:45 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/18xxx/CVE-2026-18626.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-09-22 18:17:12 UTC
NVD last modified: 2026-09-22 19:37:36 UTC

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-84618
Assigner: RTI
Published: Sep 22, 2026, 5:50:23 PM
Updated: Sep 22, 2026, 6:45:58 PM
EUVD base score (CVSS 4.0): 6.8 / 10
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EUVD-reported EPSS: 0.0000
Vendors: RTI
Products: Connext Professional (5.3.0 <5.3.*)

Connext Professional (7.0.0 <7.3.1.6)

Connext Professional (7.4.0 <7.7.0.1)

Connext Professional (6.0.0 <6.0.*)

Connext Professional (5.0.0 <5.1.*)

Connext Professional (6.1.0 <6.1.*)

Connext Professional (5.2.0 <5.2.*)
Aliases: GHSA-366x-7vgf-6pg3

ENISA 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.*.

EUVD references (1)

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

Affected products (1)

Vendor	Product	Versions	Platforms
RTI	Connext Professional	`7.4.0` (affected), `7.0.0` (affected), `6.1.0` (affected), `6.0.0` (affected), `5.3.0` (affected), `5.2.0` (affected), `5.0.0` (affected)	—

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

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

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (1)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

https://www.rti.com/vulnerabilities/#cve-2026-18626 3f572a00-62e2-4423-959a-7ea25eff1638

Remediations (10)

CVE-2026-1862 - Vulnerability Details - OpenCVE

web:app.opencve.io

Remediation No vendor fix or workaround currently provided. OpenCVE Recommended Actions Install Chrome version 144..7559.132 or newer through the official update channel. Ensure automatic updates are enabled so that future patches are applied automatically.

2026-09-23 15:46 UTC
CVE-2026-68820 Is in KEV. What BOD 26-04 Requires Now | Qualys

web:blog.qualys.com

Executive Summary CVE - 2026 -68820 is an actively exploited Windows vulnerability listed in CISA's Known Exploited Vulnerabilities (KEV) Catalog, with a remediation deadline as suggested by CISA BOD 26-04. CISA BOD 26-04 introduces risk-based remediation timelines ranging from 3 to 14 days, increasing the pressure on teams to move quickly from patch availability to verified remediation ...

2026-09-23 15:46 UTC
Cisco Advance Notification for Publication of September 16, 2026 ...

web:sec.cloudapps.cisco.com

On September 16, 2026 , the Cisco Product Security Incident Response Team (PSIRT) published the advisories that are listed in the following tables. To remediate these vulnerabilities, Cisco strongly recommends that customers upgrade to the fixed software that is indicated in the advisories. For more information about changes in Cisco PSIRT vulnerability disclosure, see Strengthening the ...

2026-09-23 15:46 UTC
Microsoft Patch Tracker (September 2026): Exploit-Ranked | Senserva

web:senserva.com

Every Microsoft security patch (KB) and the CVEs it fixes, with severity, CVSS, and CISA KEV status. Cross-linked to the CVE reference.

2026-09-23 15:46 UTC
August 2026 CVE Advisory Notification - Security

web:support.servicenow.com

Due to additional analysis provided by the security researcher who discovered CVE - 2026 -6876, we have upgraded the severity rating of CVE - 2026 -6876 from High to Critical. This change affects only the severity

2026-09-23 15:46 UTC
N-able's 3rd Critical N-central Flaw in 6 Weeks Hits CVSS 10.0 [2026]

web:tech-insider.org

The Patch : N-central 2026.3 Hotfix 4 Explained N-able's fix arrived as Hotfix 4 for the N-central 2026.3 release line, released September 6, 2026 and noted by the Cloud Security Alliance as bringing on-premises installations to build 2026.3.1.14.

2026-09-23 15:46 UTC
Patch Tuesday September 2026 | Action1

web:www.action1.com

Microsoft Vulnerabilities Microsoft's September 2026 Patch Tuesday is the largest on record, with 995 patches, a volume unlike anything we've seen before and just shy of the 1,000 mark. The release includes 119 critical vulnerabilities and two zero-days, both elevation-of-privilege flaws: CVE - 2026 -81963 in the Windows Update Stack and CVE - 2026 -85880 in Windows Advanced Local Procedure Call ...

2026-09-23 15:46 UTC
CISA Adds Two Known Exploited Vulnerabilities to Catalog

web:www.cisa.gov

BOD 26-04 further establishes basic expectations for when agencies must check whether threat actors compromised the system before the patch was applied. While BOD 26-04 applies only to FCEB agencies, CISA encourages all organizations to adopt risk-based vulnerability management and prioritize remediation of KEV Catalog vulnerabilities.

2026-09-23 15:46 UTC
Oracle Critical Patch Update Advisory - July 2026

web:www.oracle.com

This Critical Patch Update contains 1448 new security patches across the product families listed below. Please note that a My Oracle Support (MOS) note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at July 2026 Critical Patch Update: Executive Summary and Analysis.

2026-09-23 15:46 UTC
CVE-2026-18963 Impact, Exploitability, and Mitigation Steps | Wiz

web:www.wiz.io

Understand the critical aspects of CVE - 2026 -18963 with a detailed vulnerability assessment, exploitation potential, affected technologies, and remediation guidance.

2026-09-23 15:46 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-18626.json.

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