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CVE-2020-18735

25
FAUCET Score

CVE-2020-18735 describes a heap buffer overflow vulnerability in version 0.1.0 of the Eclipse IOT Cyclone DDS Project, specifically within the /src/dds_stream.c component. This flaw allows an unauthenticated attacker to cause a denial-of-service condition by crashing the DDS subscriber server. With a CVSS score of 7.5 (High), it presents a significant risk due to its network-based attack vector and low attack complexity, leading to high availability impact. Currently, there is no known public exploit code, Metasploit modules, or Nuclei templates, and it has not been added to CISA's KEV catalog, indicating a lack of active exploitation or widespread community attention.

Impacted Technologies

VendorProductVersion(s)CPE
0.1.0CPE matchmatch criteria
cpe:2.3:a:eclipse:cyclone_data_distribution_service:0.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.86%
Probability of exploitation in next 30 days
EPSS Percentile
77.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0186 is in the 60th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / eclipse-cyclonedds/cyclonedds
Third Party Advisory
github.com / eclipse-cyclonedds/cyclonedds/issues/501
ExploitIssue TrackingThird Party Advisory
projects.eclipse.org / projects/iot.cyclonedds
Release NotesVendor Advisory