CVE-2004-0426: rsync before 2.6.1 does not properly sanitize paths when running a read/write daemon without using chroot, whi

Q: How do I fix CVE-2004-0426?

rsync: upgrade to newer than 2.6. Exact commands for each OS are on this page.

Q: Is CVE-2004-0426 being exploited?

CVE-2004-0426 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-2004-0426 affect?

CVE-2004-0426 affects rsync. Severity is medium (CVSS 5.0). rsync before 2.6.1 does not properly sanitize paths when running a read/write daemon without using chroot, which allows remote attackers to write files outside of the module's path.

Q: How urgent is CVE-2004-0426?

Priority 40/100. No elevated risk signals yet.

This month

MEDIUM 5.0UPGRADE

CVE-2004-0426 is a medium-severity flaw (CVSS 5.0) affecting rsync. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

rsync before 2.6.1 does not properly sanitize paths when running a read/write daemon without using chroot, which allows remote attackers to write files outside of the module's path.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	3.4% (top 11%)
CISA exploited list	No
Published	2004-07-07
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: andrew tridgell

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

andrew tridgell rsync UPGRADE

Affected: <= 2.6

Fixed in: newer than 2.6

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.6 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rsync

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-2004-0426?

rsync: upgrade to newer than 2.6. Exact commands for each OS are on this page.

Is CVE-2004-0426 being exploited?

CVE-2004-0426 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-2004-0426 affect?

CVE-2004-0426 affects rsync. Severity is medium (CVSS 5.0). rsync before 2.6.1 does not properly sanitize paths when running a read/write daemon without using chroot, which allows remote attackers to write files outside of the module's path.

How urgent is CVE-2004-0426?

Priority 40/100. No elevated risk signals yet.

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References

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