CVE-2018-17281

mediumpriority · attend · 48EPSS 0.524 · 99 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

52.4% (99th) EPSS

CVSS 5 · medium

Is it mine?

11 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-27

There is a stack consumption vulnerability in the res_http_websocket.so module of Asterisk through 13.23.0, 14.7.x through 14.7.7, and 15.x through 15.6.0 and Certified Asterisk through 13.21-cert2. It allows an attacker to crash Asterisk via a specially crafted HTTP request to upgrade the connection to a websocket.

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

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimary

affected products (11)

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:*:*:*:*:*:*:*:*
debian debian linux= 9.0nvdUScpe:2.3:o:debian:debian_linux:*:*:*:*:*:*:*:*
digium asterisk13.0.0 → 13.23.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk14.0.0 → 14.7.7nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium asterisk15.0.0 → 15.6.0nvdUScpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:*
digium certified asterisk= 11.6nvdUScpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*
digium certified asterisk= 13.1nvdUScpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*
digium certified asterisk= 13.13nvdUScpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*
digium certified asterisk= 13.21nvdUScpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*
digium certified asterisk= 13.8nvdUScpe:2.3:a:digium:certified_asterisk:*:*:*:*:*:*:*:*

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 2018-09-24modified 2026-06-17

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+9607 more

references (30)

External citations — patches, advisories, analysis.

scry

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