High 7.8Published Feb 1, 2016

CVE-2016-1721The 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.

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects apple iphone_os and 3 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 7.8 HIGH (v3.0, NVD)CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-119
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple iphone_os apple:iphone_os	before 9.2.1	NVD
apple mac_os_x apple:mac_os_x	before 10.11.3	NVD
apple tvos apple:tvos	before 9.1.1	NVD
apple watchos apple:watchos	before 2.2	NVD

References

References

http://lists.apple.com/archives/security-announce/2016/Jan/msg00002.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/Jan/msg00003.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/Jan/msg00005.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html	mailing-list, vendor-advisory
http://packetstormsecurity.com/files/135444/iOS-OS-X-Kernel-Uninitialized-Variable-Code-Execution.html	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1034736	third-party-advisory, vdb-entry
https://code.google.com/p/google-security-research/issues/detail?id=618	exploit, third-party-advisory
https://support.apple.com/HT205729	vendor-advisory
https://support.apple.com/HT205731	vendor-advisory
https://support.apple.com/HT205732	vendor-advisory
1–10 of 12

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.