Cyber Resilience

CVE-2021-38427

Medium

Published: 05 May 2022

Published
05 May 2022
Modified
05 February 2025
KEV Added
Patch
CVSS Score v3.1 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
EPSS Score 0.0010 27.5th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-38427 is a medium-severity Stack-based Buffer Overflow (CWE-121) vulnerability in Rti Connext Professional. Its CVSS base score is 6.6 (Medium).

Operationally, ranked at the 27.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

RTI Connext DDS Professional and Connext DDS Secure Versions 4.2.x to 6.1.0 are vulnerable to a stack-based buffer overflow, which may allow a local attacker to execute arbitrary code.

CWE(s)

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

rti
connext professional
4.2.0 — 6.1.0
rti
connext secure
4.2.0 — 6.1.0

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References