CVE-2016-7551

mediumpriority · track · 32EPSS 0.053 · 93 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

5.32% (93rd) EPSS

CVSS 5 · medium

Is it mine?

72 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

chain_sip in Asterisk Open Source 11.x before 11.23.1 and 13.x 13.11.1 and Certified Asterisk 11.6 before 11.6-cert15 and 13.8 before 13.8-cert3 allows remote attackers to cause a denial of service (port exhaustion).

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

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

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-399USprimary

affected products (72)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
debian debian linux= 8.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
digium asterisk= 11.0.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.0.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.0.2nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.1.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.1.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.1.2nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.10.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.10.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.10.2nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.11.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.12.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.12.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.13.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.13.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.14.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.14.1nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.14.2nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk= 11.15.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*

showing 20 of 72

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 2017-04-17modified 2026-06-17

related (3,726)

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+3721 more

references (16)

External citations — patches, advisories, analysis.

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