CVE-2026-7866CWE-121

CVE-2026-7866

published September 22, 2026

CVSS
10.0
EPSS
0%
Percentile
22.8
In the wild
Unconfirmed
What it is

Stack-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 5.2.0 before 5.2.*, from 4.3x before 5.1.*.

The record
Technical detail
CVSS
10.0 · NONE
CVSS v4.0
10.0 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00311 · 22.8th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-09-22T22:17Z
References (1)
https://www.rti.com/vulnerabilities/#cve-2026-7866 · 3f572a00-62e2-4423-959a-7ea25eff1638
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 22 SEP 17:50Z
    Stack-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers.
    cvelistv5