CVE-2020-18734 json
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.
published 2021-08-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-10651
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.86% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/eclipse-cyclonedds/cyclonedds/issues/476 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/eclipse-cyclonedds/cyclonedds/issues/476
exploit, issue-tracking, third-party-advisory
-
projects.eclipse.org
/projects/iot.cyclonedds
release-notes, vendor-advisory
-
github.com
/eclipse-cyclonedds/cyclonedds
third-party-advisory
Sources
- CVE List CVE-2020-18734
- NVD CVE-2020-18734
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