How severe is CVE-2004-0390?

CVE-2004-0390 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2004-0390 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0390?

CVE-2004-0390 primarily affects Sco Openserver. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0390?

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-2004-0390 published?

CVE-2004-0390 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-0390

CVE-2004-0390 is a high-severity vulnerability in Sco Openserver 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% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sco Openserver
Published: 2004-12-31
Last modified: 2026-06-16

Description

SCO OpenServer 5.0.5 through 5.0.7 only supports Xauthority style access control when users log in using scologin, which allows remote attackers to gain unauthorized access to an X session via other X login methods.

Frequently asked questions

What is CVE-2004-0390?: SCO OpenServer 5.0.5 through 5.0.7 only supports Xauthority style access control when users log in using scologin, which allows remote attackers to gain unauthorized access to an X session via other X login methods.
How severe is CVE-2004-0390?: CVE-2004-0390 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2004-0390 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0390?: CVE-2004-0390 primarily affects Sco Openserver. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0390?: 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-2004-0390 published?: CVE-2004-0390 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:sco:openserver:5.0.5:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.6:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:5.0.7:*:*:*:*:*:*:*

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