CVE-2026-30803CWE-191

CVE-2026-30803

Critical · published June 17, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
42.5
In the wild
Unconfirmed
What it is

Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers. This issue affects Connext Micro: from 4.0.0 before 4.3.0.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00508 · 42.5th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2026-06-17T22:17Z
Affected products (1)
ProductVersionsFixed in
rti/connext_micro≥ 4.0.0, < 4.3.04.3.0
References (1)
https://www.rti.com/vulnerabilities/#cve-2026-30803 · 3f572a00-62e2-4423-959a-7ea25eff1638
EPSS history
Timeline
  • 17 JUN 17:21Z
    Integer Underflow (Wrap or Wraparound) vulnerability in RTI Connext Micro (Core Libraries) allows Overread Buffers.
    cvelistv5