What is CVE-2021-38447?

CVE-2021-38447 is a high-severity vulnerability in Objectcomputing Opendds, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 8.6/10. Published 2022-05-05.

How severe is CVE-2021-38447?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Objectcomputing Opendds

CVE-2021-38447

OCI OpenDDS versions prior to 3.18.1 are vulnerable when an attacker sends a specially crafted packet to flood target devices with unwanted traffic, which may result in a denial-of-service condition.

Published 2022-05-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.7th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: +0.000

Affected products

Objectcomputing Opendds
Oci Opendds — versions unspecified

Weakness classification (CWE)

CWE-405 — Asymmetric Resource Consumption (Amplification)

References

www.cisa.gov/uscert/ics/advisories/icsa-21-315-02 (US Government Resource, Third Party Advisory)
opendds.org/ (Product)

Frequently asked questions

What is CVE-2021-38447?: CVE-2021-38447 is a high-severity vulnerability in Objectcomputing Opendds, classified under Asymmetric Resource Consumption (Amplification). CVSS score: 8.6/10. Published 2022-05-05.
How severe is CVE-2021-38447?: High severity. CVSS v3 base score is 8.6 out of 10.