Is CVE-2009-0478 actively exploited?

CVE-2009-0478 has no public evidence of in-the-wild exploitation as of 2025-04-09.

What is the CVSS score for CVE-2009-0478?

CVE-2009-0478 has a CVSS score of 5 (UNKNOWN severity). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P.

How do I patch CVE-2009-0478?

Patch guidance is available from squid security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2009-0478.

CVE-2009-0478 - remediation guidance & executive summary

Q: Which products are affected by CVE-2009-0478?

22 products: squid squid, squid squid, squid squid, squid squid, squid squid, and 17 more.

Description

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.

CVSS Metrics

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector: network
Access Cmplx: low
Auth: none
Confidentiality: none
Integrity: none
Availability: partial
Weaknesses: CWE-20 · Improper Input Validation

Metadata

Primary Vendor: SQUID
Published: 2/8/2009
Last Modified: 4/9/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

squid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squidsquid : squid

Remediation Guidance

Executive Summary

View on NIST NVD