CVE-2026-18458: medium-severity vulnerability in RTI Connext Professional
Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource Using Incompatible Type ('Type Confusion') vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers.
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.1%
Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource Using Incompatible Type ('Type Confusion') 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 7.3.0 before 7.3.1.6, from 6.1.2.21 before 6.1.*.
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
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-2026-18459HIGHIncorrect Calculation vulnerability in RTI Connext Professional (Core Libraries) allows Abuse Existing Functionality.EPSS 0.4%CVE-2026-18457HIGHHeap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.EPSS 0.4%