CVE-2009-4008

mediumpriority · track · 21EPSS 0.027 · 86 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.70% (86th) EPSS

CVSS 5 · medium

Is it mine?

31 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.

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-399USprimary

affected products (31)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
nlnetlabs unbound≤ 1.4.3nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.0nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.09nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.1nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.10nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.11nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.2nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.3nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.4nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.5nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.6nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.7nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.7.1nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.7.2nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 0.8nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 1.0.0nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 1.0.1nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 1.0.2nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*
nlnetlabs unbound= 1.1.0nvdUScpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:*

showing 20 of 31

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2011-06-02modified 2026-06-16

related (3,726)

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+3721 more

references (9)

External citations — patches, advisories, analysis.

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