CVE-2004-1165: Konqueror 3.3.1 allows remote attackers to execute arbitrary FTP commands via an ftp:// URL that contains a UR

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HIGH 7.5DOWNGRADEDOWNGRADE

CVE-2004-1165 is a high-severity flaw (CVSS 7.5) affecting kdelibs, konqueror. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Konqueror 3.3.1 allows remote attackers to execute arbitrary FTP commands via an ftp:// URL that contains a URL-encoded newline ("%0a") before the FTP command, which causes the commands to be inserted into the resulting FTP session, as demonstrated using a PORT command.

Why this priority

High severity
EPSS top 9%: 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	4.4% (top 9%)
CISA exploited list	No
Published	2005-01-10
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

2005-01-10 05:00 UTCPublished CVE record published
2026-06-16 22:07 UTCUpdated Record last modified

kde kdelibs DOWNGRADE

Affected: 3.1 · 3.1.1 · 3.1.2 · 3.1.3 · 3.1.4 · 3.1.5 · 3.2 · 3.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.1 (Debian / Ubuntu)

apt-cache madison kdelibs sudo apt install kdelibs=<VERSION_BEFORE_3.1> sudo apt-mark hold kdelibs

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

dnf --showduplicates list kdelibs sudo dnf downgrade kdelibs-<VERSION_BEFORE_3.1> sudo dnf versionlock add kdelibs

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.

kde konqueror DOWNGRADE

Affected: 3.3.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.3.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.3.1 (Debian / Ubuntu)

apt-cache madison konqueror sudo apt install konqueror=<VERSION_BEFORE_3.3.1> sudo apt-mark hold konqueror

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

dnf --showduplicates list konqueror sudo dnf downgrade konqueror-<VERSION_BEFORE_3.3.1> sudo dnf versionlock add konqueror

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: KDE FTP - KIOSlave URI Arbitrary FTP Server Command Execution

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-2004-1165?

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

Is CVE-2004-1165 being exploited?

CVE-2004-1165 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-2004-1165 affect?

CVE-2004-1165 affects kdelibs, konqueror. Severity is high (CVSS 7.5). Konqueror 3.3.1 allows remote attackers to execute arbitrary FTP commands via an ftp:// URL that contains a URL-encoded newline ("%0a") before the FTP command, which causes the commands to be inserted into the resulting FTP session, as demo

How urgent is CVE-2004-1165?

Priority 54/100. High severity; EPSS top 9%: very likely to be exploited; Public exploit reference

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References

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