CVE-2004-2479

Squid Web Proxy Cache 2.5 might allow remote attackers to obtain sensitive information via URLs containing invalid hostnames that cause DNS operations to fail, which results in references to previously used error messages.

Published: 2004-12-31 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-2479 is rated Moderate Risk (45.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.03%). Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2004-2479

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 2025-03-30 1.47% 1.03% -0.44%
2 2025-03-29 1.03% 1.47% +0.44%
3 2025-03-17 — 1.03% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-2479

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:P/I:N/A:N 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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2004-2479

OS Trackers for CVE-2004-2479

vendor priority summary link
debian not yet assigned CVE-2004-2479 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-2004-2479
redhat low — https://access.redhat.com/security/cve/CVE-2004-2479

Affected software / configurations for CVE-2004-2479

Vendor Product Version Raw CPE
national_science_foundation squid_web_proxy_cache 2.5_stable1 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable1:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable2 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable2:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable3 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable3:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable4 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable4:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable5 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable5:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable6 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable6:*:*:*:*:*:*:*
national_science_foundation squid_web_proxy_cache 2.5_stable7 cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.5_stable7:*:*:*:*:*:*:*

References for CVE-2004-2479

cvelogic Threat Intelligence