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Fencer Intel
high 7.8

CVE-2016-1821 json

IOAudioFamily in Apple OS X before 10.11.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service…

published 10y ago modified 4mo ago also EUVD-2016-2916

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
1
Exploit-DB

Summary

IOAudioFamily in Apple OS X before 10.11.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (NULL pointer dereference) via a crafted app.

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Timeline

  1. Published
  2. First public exploit (EDB-39926)

Exploit prediction

4.75% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-39926 Apple Mac OSX Kernel - Null Pointer Dereference in IOAudioEngine dos, 2016-06-10
  • bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=776 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

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.