How severe is CVE-2004-2091?

CVE-2004-2091 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-2091 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2091?

CVE-2004-2091 affects Microsoft Baseline Security Analyzer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-2091?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-2091 published?

CVE-2004-2091 was published on 2004-02-10 and last updated on 2026-06-16.

CVE-2004-2091

CVE-2004-2091 is a medium-severity vulnerability in Microsoft Baseline Security Analyzer with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Baseline Security Analyzer
Published: 2004-02-10
Last modified: 2026-06-16

Description

Microsoft Baseline Security Analyzer (MBSA) 1.2 does not correctly identify systems that have been patched but remain vulnerable to exploit until the system is rebooted, possibly giving the administrator a false sense of security.

Frequently asked questions

What is CVE-2004-2091?: Microsoft Baseline Security Analyzer (MBSA) 1.2 does not correctly identify systems that have been patched but remain vulnerable to exploit until the system is rebooted, possibly giving the administrator a false sense of security.
How severe is CVE-2004-2091?: CVE-2004-2091 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-2091 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2091?: CVE-2004-2091 affects Microsoft Baseline Security Analyzer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-2091?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2091 published?: CVE-2004-2091 was published on 2004-02-10 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:baseline_security_analyzer:1.2:*:*:*:*:*:*:*

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