CVE-2005-3960: Kadu 0.4.2 and 0.5.0pre allows remote attackers to cause a denial of service (crash or generated traffic) via

This month

HIGH 7.8DOWNGRADE

CVE-2005-3960 is a high-severity flaw (CVSS 7.8) affecting kadu. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Kadu 0.4.2 and 0.5.0pre allows remote attackers to cause a denial of service (crash or generated traffic) via a malformed message, possibly with incomplete information.

Why this priority

High severity

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

Risk facts

CVSS score	7.8 (High)
EPSS exploit chance	2.0% (top 19%)
CISA exploited list	No
Published	2005-12-01
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kadu

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

Am I affected?

Timeline

2005-12-01 06:03 UTCPublished CVE record published
2026-06-16 22:17 UTCUpdated Record last modified

kadu kadu DOWNGRADE

Affected: 0.4.2 · 0.5_pre

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.4.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 0.4.2 (Debian / Ubuntu)

apt-cache madison kadu sudo apt install kadu=<VERSION_BEFORE_0.4.2> sudo apt-mark hold kadu

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

dnf --showduplicates list kadu sudo dnf downgrade kadu-<VERSION_BEFORE_0.4.2> sudo dnf versionlock add kadu

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-2005-3960?

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

Is CVE-2005-3960 being exploited?

CVE-2005-3960 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-2005-3960 affect?

CVE-2005-3960 affects kadu. Severity is high (CVSS 7.8). Kadu 0.4.2 and 0.5.0pre allows remote attackers to cause a denial of service (crash or generated traffic) via a malformed message, possibly with incomplete information.

How urgent is CVE-2005-3960?

Priority 48/100. High severity

Related CVEs

CVE-2012-1410 MEDIUM 4.3 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in the History Window implementation in Kadu 0.9.0 through
CVE-2006-0768 MEDIUM 5.0 DOWNGRADE Kadu 0.4.3 allows remote attackers to cause a denial of service (application crash) via a large number of imag
CVE-2005-1852 HIGH 7.5 DOWNGRADE MITIGATE Multiple integer overflows in libgadu, as used in Kopete in KDE 3.2.3 to 3.4.1, ekg before 1.6rc3, GNU Gadu, C

References

← Back to latest CVEs