CVE-2005-0095

Exp

The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WCCP messages with source addresses that are spoofed to reference Squid's home router and invalid WCCP_I_SEE_YOU cache numbers.

Published: 2005-01-15 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2005-0095 is rated High Exploit Risk (64.7/100): CVSS Medium severity, with high exploitation likelihood (EPSS 68.78%, 99th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2005-0095

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2005-0095

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 75.84% 68.78% -7.07%
2 2025-03-30 79.65% 75.84% -3.80%
3 2025-03-29 — 79.65% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2005-0095

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2005-0095

OS Trackers for CVE-2005-0095

vendor priority summary link
debian not yet assigned CVE-2005-0095 not yet assigned priority: Debian including 1 source packages (squid), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2005-0095
redhat — — https://access.redhat.com/security/cve/CVE-2005-0095
ubuntu medium CVE-2005-0095 medium priority: Ubuntu including 1 source packages (squid), 4 status rows across 4 suites (dapper, edgy, feisty, upstream): released 3, needs-triage 1. https://ubuntu.com/security/CVE-2005-0095

Affected software / configurations for CVE-2005-0095

Vendor Product Version Raw CPE
squid squid 2.0_patch2 cpe:2.3:a:squid:squid:2.0_patch2:*:*:*:*:*:*:*
squid squid 2.1_patch2 cpe:2.3:a:squid:squid:2.1_patch2:*:*:*:*:*:*:*
squid squid 2.3_.stable4 cpe:2.3:a:squid:squid:2.3_.stable4:*:*:*:*:*:*:*
squid squid 2.3_.stable5 cpe:2.3:a:squid:squid:2.3_.stable5:*:*:*:*:*:*:*
squid squid 2.3_stable5 cpe:2.3:a:squid:squid:2.3_stable5:*:*:*:*:*:*:*
squid squid 2.4 cpe:2.3:a:squid:squid:2.4:*:*:*:*:*:*:*
squid squid 2.4_.stable2 cpe:2.3:a:squid:squid:2.4_.stable2:*:*:*:*:*:*:*
squid squid 2.4_.stable6 cpe:2.3:a:squid:squid:2.4_.stable6:*:*:*:*:*:*:*
squid squid 2.4_.stable7 cpe:2.3:a:squid:squid:2.4_.stable7:*:*:*:*:*:*:*
squid squid 2.4_stable7 cpe:2.3:a:squid:squid:2.4_stable7:*:*:*:*:*:*:*
squid squid 2.5.6 cpe:2.3:a:squid:squid:2.5.6:*:*:*:*:*:*:*
squid squid 2.5.stable1 cpe:2.3:a:squid:squid:2.5.stable1:*:*:*:*:*:*:*
squid squid 2.5.stable2 cpe:2.3:a:squid:squid:2.5.stable2:*:*:*:*:*:*:*
squid squid 2.5.stable3 cpe:2.3:a:squid:squid:2.5.stable3:*:*:*:*:*:*:*
squid squid 2.5.stable4 cpe:2.3:a:squid:squid:2.5.stable4:*:*:*:*:*:*:*
squid squid 2.5.stable5 cpe:2.3:a:squid:squid:2.5.stable5:*:*:*:*:*:*:*
squid squid 2.5.stable6 cpe:2.3:a:squid:squid:2.5.stable6:*:*:*:*:*:*:*
squid squid 2.5.stable7 cpe:2.3:a:squid:squid:2.5.stable7:*:*:*:*:*:*:*
squid squid 2.5_.stable1 cpe:2.3:a:squid:squid:2.5_.stable1:*:*:*:*:*:*:*
squid squid 2.5_.stable3 cpe:2.3:a:squid:squid:2.5_.stable3:*:*:*:*:*:*:*
squid squid 2.5_.stable4 cpe:2.3:a:squid:squid:2.5_.stable4:*:*:*:*:*:*:*
squid squid 2.5_.stable5 cpe:2.3:a:squid:squid:2.5_.stable5:*:*:*:*:*:*:*
squid squid 2.5_.stable6 cpe:2.3:a:squid:squid:2.5_.stable6:*:*:*:*:*:*:*
squid squid 2.5_stable3 cpe:2.3:a:squid:squid:2.5_stable3:*:*:*:*:*:*:*
squid squid 2.5_stable4 cpe:2.3:a:squid:squid:2.5_stable4:*:*:*:*:*:*:*
squid squid 2.5_stable9 cpe:2.3:a:squid:squid:2.5_stable9:*:*:*:*:*:*:*
squid squid 2.6.stable1 cpe:2.3:a:squid:squid:2.6.stable1:*:*:*:*:*:*:*

References for CVE-2005-0095

URL Tags
http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000923 Patch Vendor Advisory
http://fedoranews.org/updates/FEDORA--.shtml
http://secunia.com/advisories/13825 Patch Vendor Advisory
http://security.gentoo.org/glsa/glsa-200501-25.xml Patch Vendor Advisory
http://securitytracker.com/id?1012882
http://www.debian.org/security/2005/dsa-651 Patch Vendor Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2005:014
http://www.novell.com/linux/security/advisories/2005_06_squid.html Patch Vendor Advisory
http://www.osvdb.org/12886
http://www.redhat.com/support/errata/RHSA-2005-060.html Patch Vendor Advisory
http://www.redhat.com/support/errata/RHSA-2005-061.html Patch Vendor Advisory
http://www.securityfocus.com/bid/12275
http://www.squid-cache.org/Advisories/SQUID-2005_2.txt Patch Vendor Advisory
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-wccp_denial_of_service.patch Exploit Vendor Advisory
http://www.trustix.org/errata/2005/0003/ Patch Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10269
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