How severe is CVE-2000-0638?

CVE-2000-0638 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2000-0638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0638?

CVE-2000-0638 primarily affects Sean Macguire Big Brother. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0638?

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

When was CVE-2000-0638 published?

CVE-2000-0638 was published on 2000-07-11 and last updated on 2026-06-16.

CVE-2000-0638

CVE-2000-0638 is a critical-severity vulnerability in Sean Macguire Big Brother with a CVSS 2.0 base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sean Macguire Big Brother
Published: 2000-07-11
Last modified: 2026-06-16

Description

bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) attack on the HOSTSVC parameter.

Frequently asked questions

What is CVE-2000-0638?: bb-hostsvc.sh in Big Brother 1.4h1 and earlier allows remote attackers to read arbitrary files via a .. (dot dot) attack on the HOSTSVC parameter.
How severe is CVE-2000-0638?: CVE-2000-0638 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2000-0638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0638?: CVE-2000-0638 primarily affects Sean Macguire Big Brother. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0638?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2000-0638 published?: CVE-2000-0638 was published on 2000-07-11 and last updated on 2026-06-16.

References

Affected products (12)

cpe:2.3:a:sean_macguire:big_brother:1.0:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.1:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.2:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.3:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.3b:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.4:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.4g:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.4h:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.4h1:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.09b:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.09c:*:*:*:*:*:*:*
cpe:2.3:a:sean_macguire:big_brother:1.09d:*:*:*:*:*:*:*

More vulnerabilities in Sean Macguire Big Brother

CVE-2000-0639 — High (CVSS 7.5): The default configuration of Big Brother 1.4h2 and earlier does not include proper access restrictions, which allows…
CVE-2000-0450 — High (CVSS 7.5): Vulnerability in bbd server in Big Brother System and Network Monitor allows an attacker to execute arbitrary commands.

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