How severe is CVE-2001-1086?

CVE-2001-1086 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2001-1086 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2001-1086?

CVE-2001-1086 primarily affects Xfree86 Project X11r6. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2001-1086?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2001-1086 published?

CVE-2001-1086 was published on 2001-07-04 and last updated on 2026-06-16.

CVE-2001-1086

CVE-2001-1086 is a high-severity vulnerability in Xfree86 Project X11r6 with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Xfree86 Project X11r6
Published: 2001-07-04
Last modified: 2026-06-16

Description

XDM in XFree86 3.3 and 3.3.3 generates easily guessable cookies using gettimeofday() when compiled with the HasXdmXauth option, which allows remote attackers to gain unauthorized access to the X display via a brute force attack.

Frequently asked questions

What is CVE-2001-1086?: XDM in XFree86 3.3 and 3.3.3 generates easily guessable cookies using gettimeofday() when compiled with the HasXdmXauth option, which allows remote attackers to gain unauthorized access to the X display via a brute force attack.
How severe is CVE-2001-1086?: CVE-2001-1086 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2001-1086 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2001-1086?: CVE-2001-1086 primarily affects Xfree86 Project X11r6. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2001-1086?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2001-1086 published?: CVE-2001-1086 was published on 2001-07-04 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:xfree86_project:x11r6:3.3:*:*:*:*:*:*:*
cpe:2.3:a:xfree86_project:x11r6:3.3.3:*:*:*:*:*:*:*

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