CVE-2000-1060: The default configuration of XFCE 3.5.1 bypasses the Xauthority access control mechanism with an "xhost + loca

Routine

MEDIUM 4.6DOWNGRADE

CVE-2000-1060 is a medium-severity flaw (CVSS 4.6) affecting xfce. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The default configuration of XFCE 3.5.1 bypasses the Xauthority access control mechanism with an "xhost + localhost" command in the xinitrc program, which allows local users to sniff X Windows traffic and gain privileges.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	4.6 (Medium)
EPSS exploit chance	0.3% (top 73%)
CISA exploited list	No
Published	2000-12-11
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: xfree86 project

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

Am I affected?

Timeline

2000-12-11 05:00 UTCPublished CVE record published
2026-06-16 21:53 UTCUpdated Record last modified

xfree86 project xfce DOWNGRADE

Affected: 3.5.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.5.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 3.5.1 (Debian / Ubuntu)

apt-cache madison xfce sudo apt install xfce=<VERSION_BEFORE_3.5.1> sudo apt-mark hold xfce

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

dnf --showduplicates list xfce sudo dnf downgrade xfce-<VERSION_BEFORE_3.5.1> sudo dnf versionlock add xfce

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-2000-1060?

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

Is CVE-2000-1060 being exploited?

CVE-2000-1060 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-2000-1060 affect?

CVE-2000-1060 affects xfce. Severity is medium (CVSS 4.6). The default configuration of XFCE 3.5.1 bypasses the Xauthority access control mechanism with an "xhost + localhost" command in the xinitrc program, which allows local users to sniff X Windows traffic and gain privileges.

How urgent is CVE-2000-1060?

Priority 23/100. No elevated risk signals yet.

Software pages

Windows vulnerabilities

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References

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