CVE-2020-18734: eclipse cyclone_data_distribution_service Out-of-bounds Write
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2020-18734
Published 23-08-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-18734 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in eclipse cyclone_data_distribution_service. EPSS estimates a 1.86% chance of exploitation in the next 30 days, higher than 78.9% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
1.86%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Timeline
- 23-08-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A stack buffer overflow in /ddsi/q_bitset.h of Eclipse IOT Cyclone DDS Project v0.1.0 causes the DDS subscriber server to crash.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.86%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.86% on 19-09-2026
19-09-202619-10-2026
EPSS score1.86%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundCyclonedds
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Eclipse1 product
Ubuntu1 product
- cycloneddsAll versions (No fix recorded)
2 vendors · 2 products
References
5 links- github.com/eclipse-cyclonedds/cyclonedds/issues/476X Refsource MISCREPORTExploitIssue TrackingThird Party Advisory