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Fencer Intel
high 7.8

CVE-2016-1721 json

The kernel in Apple iOS before 9.2.1, OS X before 10.11.3, and tvOS before 9.1.1 allows local users to gain privileges or cause a denial of…

published 2016-02-01 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-2816

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits
1
Exploit-DB

Summary

The kernel in Apple iOS before 9.2.1, OS X before 10.11.3, and tvOS before 9.1.1 allows local users to gain privileges or cause a denial of service (memory corruption) via unspecified vectors.

Patch / fix

  • apple iphone_os 9.2.1
  • apple mac_os_x 10.11.3
  • apple tvos 9.1.1
  • apple watchos 2.2

Timeline

  1. First public exploit (EDB-39358)
  2. Published

Exploit prediction

0.99% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-39358 Apple Mac OSX / iOS - Multiple Kernel Uninitialized Variable Bugs Leading to Code Execution Vulnerabilities dos, 2016-01-28
  • code.google.com https://code.google.com/p/google-security-research/issues/detail?id=618 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:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

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.