CVE-2026-18459: high-severity vulnerability in RTI Connext Professional
Incorrect Calculation vulnerability in RTI Connext Professional (Core Libraries) allows Abuse Existing Functionality.
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.4%
Incorrect Calculation vulnerability in RTI Connext Professional (Core Libraries) allows Abuse Existing Functionality. 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 4.1x before 5.1.*.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
RTI · Connext ProfessionalRelated CVEs — RTI Connext Professional
In the same product, most dangerous first.
CVE-2021-38487HIGHPotential Network Amplification and Information Exposure in RTI Connext Professional and Connext MicroEPSS 3.4%CVE-2024-52058HIGHPotential arbitrary command execution in System Designer while parsing malicious HTTP/REST requestsEPSS 0.6%CVE-2024-52061HIGHPotential stack buffer overflow when parsing an XML typeEPSS 0.5%CVE-2026-18460MEDIUMOff-by-one Error, Out-of-bounds Write vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.EPSS 0.4%CVE-2026-18457HIGHHeap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.EPSS 0.4%CVE-2024-52057CRITICALPotential arbitrary SQL query execution in Queuing Service while parsing malicious remote commands or configuration filesEPSS 0.4%