9.8

CVE-2021-38441: eclipse cyclonedds Write-what-where Condition

CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2021-38441DEBIAN-CVE-2021-38441
Published 05-05-2022Last modified 16-04-2025
Open JSON

Vulnerability summary

CVE-2021-38441 is a critical (CVSS 9.8) Write-what-where Condition vulnerability in eclipse cyclonedds. EPSS estimates a 2.15% chance of exploitation in the next 30 days, higher than 81.7% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
2.15%
0%100%
Low · +0.03 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 05-05-2022
    PublishedVulnerability first disclosed.
  2. 16-04-2025
    Last modifiedVulnerability information updated.

Description

Eclipse CycloneDDS versions prior to 0.8.0 are vulnerable to a write-what-where condition, which may allow an attacker to write arbitrary values in the XML parser.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

2.15%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

+0.03 pp

From 2.11% on 18-09-2026

18-09-202618-10-2026
EPSS score
2.15%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • cyclonedds< 0.8.1-2
Eclipse1 product
Ubuntu1 product
  • cycloneddsAll versions (No fix recorded)

3 vendors · 3 products

References

5 links