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CVE-2021-38429

30
FAUCET Score

CVE-2021-38429 affects OCI OpenDDS versions prior to 3.18.1, allowing an unauthenticated attacker to send specially crafted packets to flood target devices. This can lead to a denial-of-service condition and information exposure. Rated as Critical with a CVSS score of 9.1, the vulnerability is network-exploitable with low attack complexity, requiring no user interaction. While there is no known active exploitation, public exploit code, or KEV entry, the vulnerability has garnered significant community discussion, indicating potential interest.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.18.1CPE matchmatch criteria
cpe:2.3:a:objectcomputing:opendds:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.6MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
4.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 57th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

opendds.org
Product
cisa.gov / uscert/ics/advisories/icsa-21-315-02
Third Party AdvisoryUS Government Resource