CVE-2009-2622

mediumpriority · track · 40EPSS 0.569 · 99 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

56.9% (99th) 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 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) missing or negative status value," (3) "missing version," or (4) "missing or invalid status number," related to (a) HttpMsg.cc and (b) HttpReply.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

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:P/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimary

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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+25194 more

references (16)

External citations — patches, advisories, analysis.

scry

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