CVE-2006-0304: Buffer overflow in Dual DHCP DNS Server 1.0 allows remote attackers to cause a denial of service (application

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HIGH 7.5DOWNGRADE

CVE-2006-0304 is a high-severity flaw (CVSS 7.5) affecting dual dhcp dns server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Dual DHCP DNS Server 1.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via the DHCP options field.

Why this priority

High severity
EPSS top 6%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	6.5% (top 6%)
CISA exploited list	No
Published	2006-01-19
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: achal dhir

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

Am I affected?

Timeline

2006-01-19 00:03 UTCPublished CVE record published
2026-06-16 22:20 UTCUpdated Record last modified

achal dhir dual dhcp dns server DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy dual-dhcp-dns-server || rpm -q dual-dhcp-dns-server || dual-dhcp-dns-server --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison dual-dhcp-dns-server sudo apt install dual-dhcp-dns-server=<VERSION_BEFORE_1.0> sudo apt-mark hold dual-dhcp-dns-server

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list dual-dhcp-dns-server sudo dnf downgrade dual-dhcp-dns-server-<VERSION_BEFORE_1.0> sudo dnf versionlock add dual-dhcp-dns-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: Dual DHCP DNS Server 1.0 - DHCP Options Remote Buffer Overflow

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-2006-0304?

dual dhcp dns server: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-0304 being exploited?

CVE-2006-0304 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-2006-0304 affect?

CVE-2006-0304 affects dual dhcp dns server. Severity is high (CVSS 7.5). Buffer overflow in Dual DHCP DNS Server 1.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via the DHCP options field.

How urgent is CVE-2006-0304?

Priority 55/100. High severity; EPSS top 6%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2020-26133 HIGH 7.8 DOWNGRADE An issue was discovered in Dual DHCP DNS Server 7.40

References

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