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CVE-2005-0095

54
FAUCET Score

CVE-2005-0095 describes a denial-of-service vulnerability in Squid 2.5.STABLE7 and earlier, stemming from improper parsing of malformed WCCP messages. Attackers can exploit this by sending specially crafted WCCP messages with spoofed source addresses and invalid cache numbers, causing the Squid proxy server to crash. Rated with a CVSS score of 5.0, this vulnerability is easily exploitable over the network without authentication (AV:N/AC:L/Au:N), leading to a partial denial of service (A:P). Its high EPSS score of 0.758 and FAUCET Risk Score of 98/100 indicate a significant likelihood of exploitation. While there is no known public exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered substantial community attention with 10 mentions, suggesting ongoing discussion or interest. However, there is no indication of active exploitation or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.0_patch2CPE matchmatch criteria
cpe:2.3:a:squid:squid:2.0_patch2:*:*:*:*:*:*:*
2.1_patch2CPE matchmatch criteria
cpe:2.3:a:squid:squid:2.1_patch2:*:*:*:*:*:*:*
2.3_.stable4CPE matchmatch criteria
cpe:2.3:a:squid:squid:2.3_.stable4:*:*:*:*:*:*:*
2.3_.stable5CPE matchmatch criteria
cpe:2.3:a:squid:squid:2.3_.stable5:*:*:*:*:*:*:*
2.3_stable5CPE matchmatch criteria
cpe:2.3:a:squid:squid:2.3_stable5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
68.78%
Probability of exploitation in next 30 days
EPSS Percentile
99.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.6878 is in the 100th percentile among its peer group of 23,723 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

debianpatch availablevia nvd_reference
View patch
gentoopatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: squid-7:2.5.STABLE3-6.3E.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: squid-7:2.5.STABLE6-3.4E.3
View patch

Vendor Advisories (1)

redhatCVE-2005-0095

security flaw

Jan 12, 2005

References

distro.conectiva.com.br / atualizacoes
PatchVendor Advisory
fedoranews.org / updates/FEDORA--.shtml
secunia.com / advisories/13825
PatchVendor Advisory
security.gentoo.org / glsa/glsa-200501-25.xml
PatchVendor Advisory
securitytracker.com / id
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10269
debian.org / security/2005/dsa-651
PatchVendor Advisory
mandriva.com / security/advisories
novell.com / linux/security/advisories/2005_06_squid.html
PatchVendor Advisory
osvdb.org / 12886
redhat.com / support/errata/RHSA-2005-060.html
PatchVendor Advisory
redhat.com / support/errata/RHSA-2005-061.html
PatchVendor Advisory
securityfocus.com / bid/12275
squid-cache.org / Advisories/SQUID-2005_2.txt
PatchVendor Advisory
squid-cache.org / Versions/v2/2.5/bugs/squid-2.5.STABLE7-wccp_denial_of_service.patch
ExploitVendor Advisory
trustix.org / errata/2005/0003
PatchVendor Advisory