CVE-2006-4127: Multiple format string vulnerabilities in DConnect Daemon 0.7.0 and earlier allow remote administrators to exe

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MEDIUM 4.6DOWNGRADE

CVE-2006-4127 is a medium-severity flaw (CVSS 4.6) affecting dconnect daemon. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Multiple format string vulnerabilities in DConnect Daemon 0.7.0 and earlier allow remote administrators to execute arbitrary code via format string specifiers that are not properly handled when calling the (1) privmsg() or (2) pubmsg functions from (a) cmd.user.c, (b) penalties.c, or (c) cmd.dc.c.

Why this priority

Public exploit reference

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	2.2% (top 17%)
CISA exploited list	No
Published	2006-08-14
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: dconnect

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

Am I affected?

Timeline

2006-08-14 23:04 UTCPublished CVE record published
2026-06-16 22:28 UTCUpdated Record last modified

dconnect dconnect daemon DOWNGRADE

Affected: 0.0.2 · 0.0.3 · 0.7.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.0.2

1. Check installed version

apt-cache policy dconnect-daemon || rpm -q dconnect-daemon || dconnect-daemon --version

2. No fixed release: DOWNGRADE to a release before 0.0.2 (Debian / Ubuntu)

apt-cache madison dconnect-daemon sudo apt install dconnect-daemon=<VERSION_BEFORE_0.0.2> sudo apt-mark hold dconnect-daemon

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

dnf --showduplicates list dconnect-daemon sudo dnf downgrade dconnect-daemon-<VERSION_BEFORE_0.0.2> sudo dnf versionlock add dconnect-daemon

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-2006-4127?

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

Is CVE-2006-4127 being exploited?

CVE-2006-4127 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-2006-4127 affect?

CVE-2006-4127 affects dconnect daemon. Severity is medium (CVSS 4.6). Multiple format string vulnerabilities in DConnect Daemon 0.7.0 and earlier allow remote administrators to execute arbitrary code via format string specifiers that are not properly handled when calling the (1) privmsg() or (2) pubmsg functi

How urgent is CVE-2006-4127?

Priority 42/100. Public exploit reference

Related CVEs

CVE-2006-4126 MEDIUM 5.0 DOWNGRADE The dc_chat function in cmd.dc.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to cause a denia
CVE-2006-4125 HIGH 7.5 DOWNGRADE Stack-based buffer overflow in main.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to execute

References

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