CVE-2016-4656

apple iphone os

Published 25 Aug 2016 · updated 17 Jun 2026 · Analyzed

7.8 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 24 May 2022, with a remediation deadline of 14 Jun 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

References

lists.apple.com/archives/security-announce/2016/Aug/msg00000.html · Broken Link, Mailing List, Vendor Advisory
www.securityfocus.com/bid/92652 · Broken Link, Third Party Advisory, VDB Entry
www.securitytracker.com/id/1036694 · Broken Link, Third Party Advisory, VDB Entry
blog.lookout.com/blog/2016/08/25/trident-pegasus/ · Broken Link
support.apple.com/HT207107 · Release Notes, Vendor Advisory
www.exploit-db.com/exploits/44836/ · Exploit, Third Party Advisory, VDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656 · US Government Resource