CVE-2004-0411: The URI handlers in Konqueror for KDE 3.2.2 and earlier do not properly filter "-" characters that begin a hos

Q: How do I fix CVE-2004-0411?

konqueror: upgrade to newer than 3.2.2. Exact commands for each OS are on this page.

Q: Is CVE-2004-0411 being exploited?

CVE-2004-0411 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-2004-0411 affect?

CVE-2004-0411 affects konqueror. Severity is high (CVSS 7.5). The URI handlers in Konqueror for KDE 3.2.2 and earlier do not properly filter "-" characters that begin a hostname in a (1) telnet, (2) rlogin, (3) ssh, or (4) mailto URI, which allows remote attackers to manipulate the options that are pa

Q: How urgent is CVE-2004-0411?

Priority 50/100. High severity; EPSS top 5%: very likely to be exploited

This month

HIGH 7.5UPGRADE

CVE-2004-0411 is a high-severity flaw (CVSS 7.5) affecting konqueror. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The URI handlers in Konqueror for KDE 3.2.2 and earlier do not properly filter "-" characters that begin a hostname in a (1) telnet, (2) rlogin, (3) ssh, or (4) mailto URI, which allows remote attackers to manipulate the options that are passed to the associated programs, possibly to read arbitrary files or execute arbitrary code.

Why this priority

High severity
EPSS top 5%: very likely to be exploited

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	7.8% (top 5%)
CISA exploited list	No
Weakness	CWE-88
Published	2004-07-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: kde

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

Am I affected?

Timeline

2004-07-07 04:00 UTCPublished CVE record published
2026-06-16 22:05 UTCUpdated Record last modified

kde konqueror UPGRADE

Affected: <= 3.2.2

Fixed in: newer than 3.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 3.2.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade konqueror

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-2004-0411?

konqueror: upgrade to newer than 3.2.2. Exact commands for each OS are on this page.

Is CVE-2004-0411 being exploited?

CVE-2004-0411 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-2004-0411 affect?

CVE-2004-0411 affects konqueror. Severity is high (CVSS 7.5). The URI handlers in Konqueror for KDE 3.2.2 and earlier do not properly filter "-" characters that begin a hostname in a (1) telnet, (2) rlogin, (3) ssh, or (4) mailto URI, which allows remote attackers to manipulate the options that are pa

How urgent is CVE-2004-0411?

Priority 50/100. High severity; EPSS top 5%: very likely to be exploited

Related CVEs

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CVE-2008-5712 MEDIUM 5.0 DOWNGRADE The HTML parser in KDE Konqueror 3.5.9 allows remote attackers to cause a denial of service (application crash
CVE-2008-5698 MEDIUM 4.3 MITIGATE HTMLTokenizer::scriptHandler in Konqueror in KDE 3.5.9 and 3.5.10 allows remote attackers to cause a denial of
CVE-2008-4514 MEDIUM 5.0 DOWNGRADE The HTML parser in KDE Konqueror 3.5.9 allows remote attackers to cause a denial of service (application crash
CVE-2008-4382 MEDIUM 5.0 DOWNGRADE Konqueror in KDE 3.5.9 allows remote attackers to cause a denial of service (application crash) via Javascript

References

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