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Fencer Intel
medium 5.9

CVE-2018-7287 json

An issue was discovered in res_http_websocket.c in Asterisk 15.x through 15.2.1.

published 2018-02-22 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-19021

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.5%
EPSS 11.5% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

An issue was discovered in res_http_websocket.c in Asterisk 15.x through 15.2.1. If the HTTP server is enabled (default is disabled), WebSocket payloads of size 0 are mishandled (with a busy loop).

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-7287 updated cvss 4.3

asterisk: Denial of Service (DoS) in WebSocket frames with 0 sized payload

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

11.45% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-754 Improper Check for Unusual or Exceptional Conditions

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.