CVE-2021-43547: TwinOaks Computing CoreDX DDS versions prior to 5.9.1 are susceptible to exploitation when an attacker sends a

Q: How do I fix CVE-2021-43547?

coredx dds: upgrade to 5.9.1. Exact commands for each OS are on this page.

Q: Is CVE-2021-43547 being exploited?

CVE-2021-43547 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-43547 affect?

CVE-2021-43547 affects coredx dds. Severity is high (CVSS 7.5). TwinOaks Computing CoreDX DDS versions prior to 5.9.1 are susceptible to exploitation when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and info

Q: How urgent is CVE-2021-43547?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADE

CVE-2021-43547 is a high-severity flaw (CVSS 7.5) affecting coredx dds. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

TwinOaks Computing CoreDX DDS versions prior to 5.9.1 are susceptible to exploitation when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and information exposure.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Weakness	CWE-406
Published	2022-05-05
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: twinoakscomputing

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-05-05 17:15 UTCPublished CVE record published
2026-06-17 04:11 UTCUpdated Record last modified

twinoakscomputing coredx dds UPGRADE

Affected: < 5.9.1

Fixed in: 5.9.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy coredx-dds || rpm -q coredx-dds || coredx-dds --version

2. UPGRADE to 5.9.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade coredx-dds

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade coredx-dds

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-43547?

coredx dds: upgrade to 5.9.1. Exact commands for each OS are on this page.

Is CVE-2021-43547 being exploited?

CVE-2021-43547 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-43547 affect?

CVE-2021-43547 affects coredx dds. Severity is high (CVSS 7.5). TwinOaks Computing CoreDX DDS versions prior to 5.9.1 are susceptible to exploitation when an attacker sends a specially crafted packet to flood target devices with unwanted traffic. This may result in a denial-of-service condition and info

How urgent is CVE-2021-43547?

Priority 52/100. High severity; Remotely exploitable, no login, no user action

References

← Back to latest CVEs