CVE-2006-5781: Stack-based buffer overflow in the handshake function in iodine 0.3.2 allows remote attackers to execute arbit

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HIGH 7.5DOWNGRADE

CVE-2006-5781 is a high-severity flaw (CVSS 7.5) affecting iodine. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Stack-based buffer overflow in the handshake function in iodine 0.3.2 allows remote attackers to execute arbitrary code via a crafted DNS response.

Why this priority

High severity

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

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	3.6% (top 10%)
CISA exploited list	No
Published	2006-11-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: iodine

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

Am I affected?

Timeline

2006-11-07 20:07 UTCPublished CVE record published
2026-06-16 22:31 UTCUpdated Record last modified

iodine iodine DOWNGRADE

Affected: 0.3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.3.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.3.2 (Debian / Ubuntu)

apt-cache madison iodine sudo apt install iodine=<VERSION_BEFORE_0.3.2> sudo apt-mark hold iodine

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

dnf --showduplicates list iodine sudo dnf downgrade iodine-<VERSION_BEFORE_0.3.2> sudo dnf versionlock add iodine

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.

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-2006-5781?

iodine: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-5781 being exploited?

CVE-2006-5781 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-2006-5781 affect?

CVE-2006-5781 affects iodine. Severity is high (CVSS 7.5). Stack-based buffer overflow in the handshake function in iodine 0.3.2 allows remote attackers to execute arbitrary code via a crafted DNS response.

How urgent is CVE-2006-5781?

Priority 49/100. High severity

Related CVEs

CVE-2024-22050 HIGH 7.5 UPGRADE Path traversal in the static file service in Iodine less than 0.7.33 allows an unauthenticated, remote attacke
CVE-2014-4168 MEDIUM 5.0 UPGRADE (1) iodined.c and (2) user.c in iodine before 0.7.0 allows remote attackers to bypass authentication by contin
CVE-2006-4831 HIGH 10.0 DOWNGRADE Unspecified vulnerability in IP over DNS is now easy (iodine) before 0.3.2 has unknown impact and attack vecto

References

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