How severe is CVE-2004-2480?

CVE-2004-2480 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2004-2480 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-2480?

CVE-2004-2480 affects National Science Foundation Squid Web Proxy Cache. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2004-2480?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2004-2480 published?

CVE-2004-2480 was published on 2004-12-31 and last updated on 2026-06-16.

CVE-2004-2480

CVE-2004-2480 is a medium-severity vulnerability in National Science Foundation Squid Web Proxy Cache with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: National Science Foundation Squid Web Proxy Cache
Published: 2004-12-31
Last modified: 2026-06-16

Description

Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.

Frequently asked questions

What is CVE-2004-2480?: Squid Web Proxy Cache 2.3.STABLE5 allows remote attackers to bypass security controls and access arbitrary websites via "@@" sequences in a URL within Internet Explorer.
How severe is CVE-2004-2480?: CVE-2004-2480 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2004-2480 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-2480?: CVE-2004-2480 affects National Science Foundation Squid Web Proxy Cache. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2004-2480?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2004-2480 published?: CVE-2004-2480 was published on 2004-12-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:national_science_foundation:squid_web_proxy_cache:2.3_stable5:*:*:*:*:*:*:*

More vulnerabilities in National Science Foundation Squid Web Proxy Cache

CVE-2004-0541 — Critical (CVSS 10.0): Buffer overflow in the ntlm_check_auth (NTLM authentication) function for Squid Web Proxy Cache 2.5.x and 3.x, when…
CVE-2004-2479 — Medium (CVSS 5.0): Squid Web Proxy Cache 2.5 might allow remote attackers to obtain sensitive information via URLs containing invalid…

All CVEs affecting National Science Foundation Squid Web Proxy Cache →