# CVE-2021-38441: cyclonedds: Eclipse CycloneDDS versions prior to 0.8.0 are vulnerable to a write-what-where condition, which may allow an attacke...

CVE-2021-38441 is fixed in cyclonedds on 1 platform, first by DEBIAN-CVE-2021-38441, released May 5, 2022. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2021-38441
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0215
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 5, 2022

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | cyclonedds Debian 12.15 (bookworm) | 0.8.1-2 | [DEBIAN-CVE-2021-38441](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38441.md) | May 5, 2022 |
| Linux | cyclonedds Debian 13.5 (trixie) | 0.8.1-2 | [DEBIAN-CVE-2021-38441](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38441.md) | May 5, 2022 |
| Linux | cyclonedds Debian 14 | 0.8.1-2 | [DEBIAN-CVE-2021-38441](https://patchblox.com/security/data/fix/linux/debian-cve-2021-38441.md) | May 5, 2022 |

---

Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

Free to use with attribution: show "Data: Patchblox Patch Radar" with a link to https://patchblox.com/security/patch-radar. Terms, including what needs a written agreement: https://patchblox.com/security/patch-radar/use-the-data

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.