CVE-2000-0638

Big Brother vulnerability

CVSS

10.0

EPSS

4.1%

EPSS pct

90th

Exploited

No known

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.

Affected vendor

Sean Macguire

Affected product

Big Brother

CVSS vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Published

2000-07-11

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to complete impact to confidentiality, complete impact to integrity, complete impact to availability.

Its EPSS score of 4.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2000-0638

Confirm whether Sean Macguire Big Brother is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2000-0638.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2000-0638

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2000-0638 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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