CVE-2005-0095
MediumThe 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 Jan 15, 2005 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2005-0095
Key Facts
Patch immediately- CVE-2005-0095 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Squid.
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 69% probability of exploitation in the next 30 days.
- Fixed versions are available, including Squid 2.4.6-2woody5, Squid 2.5.7-4, Squid 7:2.5.STABLE6-3.4E.3.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
69%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
Get the full CVE-2005-0095 brief as a PDF
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Description
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.
Affected Products
39 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SquidSquid | 2.0_patch2, 2.1_patch2, 2.3_.stable4, 2.3_stable5, 2.3_.stable5, 2.4, 2.4_.stable2, 2.4_.stable6 | 2.5.7-4 |
Patched Releases
Squid
2.4.6-2woody5, 2.5.7-4, 7:2.5.STABLE6-3.4E.3
Timeline
Publicly disclosed
Jan 15, 2005
Last updated
Aug 4, 2026
References
- advisoryRHSA-2005:060
- advisoryRHSA-2005:061
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2005-0095
- patchCLA-2005:923
- patch13825
FAQ
Common Questions.
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.
Affected: Squid versions 2.0_patch2, 2.1_patch2, 2.3_.stable4, 2.3_stable5, 2.3_.stable5, 2.4, 2.4_.stable2, 2.4_.stable6. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Squid 2.4.6-2woody5, Squid 2.5.7-4, Squid 7:2.5.STABLE6-3.4E.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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