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CVE-2004-2479

15
FAUCET Score

CVE-2004-2479 describes an information disclosure vulnerability in Squid Web Proxy Cache version 2.5. Remote attackers could exploit this by crafting URLs with invalid hostnames, triggering DNS resolution failures that inadvertently expose previously cached error messages. With a CVSS score of 5.0 (AV:N/AC:L/Au:N/C:P/I:N/A:N), this vulnerability is of medium severity, requiring no authentication and having a low attack complexity, potentially leading to the disclosure of sensitive information. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.5_stable1CPE matchmatch criteria
cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable1:*:*:*:*:*:*:*
2.5_stable2CPE matchmatch criteria
cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable2:*:*:*:*:*:*:*
2.5_stable3CPE matchmatch criteria
cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable3:*:*:*:*:*:*:*
2.5_stable4CPE matchmatch criteria
cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable4:*:*:*:*:*:*:*
2.5_stable5CPE matchmatch criteria
cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

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

Exploit Intelligence

EPSS Score
2.08%
Probability of exploitation in next 30 days
EPSS Percentile
79.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0208 is in the 68th percentile among its peer group of 23,705 CVEs.

Social Chatter

No social media mentions found for this CVE.

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 (2)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 3Fixed in: squid-7:2.5.STABLE3-6.3E.14
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: squid-7:2.5.STABLE6-3.4E.11
View patch

Vendor Advisories (1)

redhatCVE-2004-2479Low

security flaw

Nov 23, 2004

References

fedoranews.org / updates/FEDORA--.shtml
secunia.com / advisories/13408
PatchVendor Advisory
secunia.com / advisories/16977
securitytracker.com / id
Patch
exchange.xforce.ibmcloud.com / vulnerabilities/18406
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9711
osvdb.org / 12282
redhat.com / support/errata/RHSA-2005-766.html
securityfocus.com / bid/11865
Patch
squid-cache.org / bugs/show_bug.cgi
Patch