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CVE-2026-18457— Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.

Quick assessment

Affected
RTI Connext Professional
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow 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

CVSS 8.3 · High

Affected Version Matrix 6

VendorProduct Version RangeStatus
RTI Connext Professional 7.4.0< 7.7.0.1 affected
7.0.0< 7.3.1.6 affected
6.1.0< 6.1.* affected
6.0.0< 6.0.* affected
5.3.0< 5.3.* affected
5.2.3< 5.2.* affected
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I. Basic Information for CVE-2026-18457

Vulnerability Information

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Vulnerability Title
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.
Source: CVE Program / CVE List V5
Vulnerability Description
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow 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 5.2.3 before 5.2.*.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
RTI Connext Professional 7.4.0 ~ 7.7.0.1 -

II. Public POCs for CVE-2026-18457

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III. Intelligence Information for CVE-2026-18457

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Other References for CVE-2026-18457 (1)

Same Patch Batch · RTI · 2026-09-22 · 11 CVEs total

CVE-2026-7866 9.3 CRITICAL Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) all
CVE-2026-18461 9.2 CRITICAL Use of Externally-Controlled Format String vulnerability in RTI Connext Professional (Core
CVE-2026-18459 8.7 HIGH Incorrect Calculation vulnerability in RTI Connext Professional (Core Libraries) allows Ab
CVE-2026-8849 7.7 HIGH Use After Free vulnerability in RTI Connext Professional (Security Plugins) allows File Ma
CVE-2026-18462 7.3 HIGH Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI Connext Profe
CVE-2026-18460 6.9 MEDIUM Off-by-one Error, Out-of-bounds Write vulnerability in RTI Connext Professional (Core Libr
CVE-2026-11388 6.9 MEDIUM Double Free vulnerability in RTI Connext Professional (Core Libraries) allows File Manipul
CVE-2026-18458 6.8 MEDIUM Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource U
CVE-2026-18626 6.8 MEDIUM Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overr
CVE-2026-11389 6.8 MEDIUM Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource U

IV. Related Vulnerabilities

Same product: Connext Professional
Same vendor: RTI
Same weakness: CWE-122

V. Comments for CVE-2026-18457

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