CVE-2002-1510: xdm, with the authComplain variable set to false, allows arbitrary attackers to connect to the X server if the

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HIGH 10.0MITIGATE

CVE-2002-1510 is a high-severity flaw (CVSS 10.0) affecting x11r6. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

xdm, with the authComplain variable set to false, allows arbitrary attackers to connect to the X server if the xdm auth directory does not exist.

Why this priority

Critical severity

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

Risk facts

CVSS score	10.0 (High)
EPSS exploit chance	2.0% (top 20%)
CISA exploited list	No
Published	2003-03-03
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

2003-03-03 05:00 UTCPublished CVE record published
2026-06-16 21:59 UTCUpdated Record last modified

xfree86 project x11r6 MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy x11r6 || rpm -q x11r6 || x11r6 --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-2002-1510?

x11r6: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2002-1510 being exploited?

CVE-2002-1510 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-2002-1510 affect?

CVE-2002-1510 affects x11r6. Severity is high (CVSS 10.0). xdm, with the authComplain variable set to false, allows arbitrary attackers to connect to the X server if the xdm auth directory does not exist.

How urgent is CVE-2002-1510?

Priority 55/100. Critical severity

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References

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