CVE-2007-4205: XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance 5.0.2.8 allows remote attackers to cause a de

Q: How do I fix CVE-2007-4205?

heartbeat: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Q: Is CVE-2007-4205 being exploited?

CVE-2007-4205 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-2007-4205 affect?

CVE-2007-4205 affects heartbeat. Severity is high (CVSS 7.1). XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance 5.0.2.8 allows remote attackers to cause a denial of service (heartbeat control process crash) via a UDP packet to port 694. NOTE: this may be the same as CVE-2006-3121.

Q: How urgent is CVE-2007-4205?

Priority 51/100. High severity; On your watchlist

This month

HIGH 7.1WATCHLISTUPGRADE

CVE-2007-4205 is a high-severity flaw (CVSS 7.1) affecting heartbeat. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance 5.0.2.8 allows remote attackers to cause a denial of service (heartbeat control process crash) via a UDP packet to port 694. NOTE: this may be the same as CVE-2006-3121.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
EPSS exploit chance	2.5% (top 15%)
CISA exploited list	No
Published	2007-08-08
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: linux-ha

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2007-08-08 02:17 UTCPublished CVE record published
2026-06-16 22:43 UTCUpdated Record last modified

linux-ha heartbeat UPGRADE

Affected: <= 1.2.4

Fixed in: newer than 1.2.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy heartbeat || rpm -q heartbeat || heartbeat --version

2. UPGRADE to newer than 1.2.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade heartbeat

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade heartbeat

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-2007-4205?

heartbeat: upgrade to newer than 1.2.4. Exact commands for each OS are on this page.

Is CVE-2007-4205 being exploited?

CVE-2007-4205 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-2007-4205 affect?

CVE-2007-4205 affects heartbeat. Severity is high (CVSS 7.1). XHA (Linux-HA) on the BlueCat Networks Adonis DNS/DHCP Appliance 5.0.2.8 allows remote attackers to cause a denial of service (heartbeat control process crash) via a UDP packet to port 694. NOTE: this may be the same as CVE-2006-3121.

How urgent is CVE-2007-4205?

Priority 51/100. High severity; On your watchlist

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References

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