CVE-2009-2621

Name: CVE-2009-2621
Creator: NVD / NIST
Published: 2009-07-28T17:30:01.077+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 23.05%

Last modified Jun 16, 2026

CVE-2009-2621 is a vulnerability of currently unknown severity. Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.. EPSS estimates a 23.05% chance of exploitation in the next 30 days.

Description

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.

Metrics

EPSS Probability

23.05%

97.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-119

Affected Software

Vendor	Product	Versions
Squid-Cache	Squid	3.0
Squid-Cache	Squid	3.1
Squid-Cache	Squid	3.1.0.1
Squid-Cache	Squid	3.1.0.2
Squid-Cache	Squid	3.1.0.3
Squid-Cache	Squid	3.1.0.4

References

Timeline

Published: Jul 28, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-2621?

How severe is CVE-2009-2621?

Severity scoring for CVE-2009-2621 is pending analysis. The EPSS model estimates a 23.05% probability of exploitation in the next 30 days.

How do I fix CVE-2009-2621?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-2621?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST