CVE-2005-0173

CVE-2005-0173 is a high-severity vulnerability in Squid with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 32% places it in the 98th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

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.

Frequently asked questions

What is CVE-2005-0173?
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.
How severe is CVE-2005-0173?
CVE-2005-0173 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-0173 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 32% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-0173?
CVE-2005-0173 primarily affects Squid. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-0173?
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-2005-0173 published?
CVE-2005-0173 was published on 2005-05-02 and last updated on 2026-06-16.

References

Affected products (38)

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