CVE-2009-2621

mediumpriority · track · 28EPSS 0.230 · 98 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

23.0% (98th) EPSS

CVSS 5 · medium

Is it mine?

7 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-28

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.

cvss

Technical severity, 0–10. One row per scoring source.

5.0

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v2.04.3mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USprimary

affected products (7)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
squid-cache squid= 3.0nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
squid-cache squid= 3.1nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
squid-cache squid= 3.1.0.1nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
squid-cache squid= 3.1.0.2nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
squid-cache squid= 3.1.0.3nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
squid-cache squid= 3.1.0.4nvdUScpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-07-28modified 2026-06-16

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+21039 more

references (16)

External citations — patches, advisories, analysis.

scry

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