CVE-2005-0173

Squid vulnerability

CVSS

7.5

EPSS

31.9%

EPSS pct

98th

Exploited

No known

squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.

Affected vendor

Squid

Affected product

Squid

CVSS vector

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

Published

2005-05-02

Risk analysis

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

Its EPSS score of 31.9% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2005-0173

Confirm whether Squid Squid is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2005-0173.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2005-0173

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2005-0173 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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