CVE-2016-4656

KEVApple iOS Memory Corruption Vulnerability

Description

A memory corruption vulnerability in Apple iOS kernel allows attackers to execute code in a privileged context or cause a denial-of-service (DoS) via a crafted application.

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.

CVSS 3.1 vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

PublishedAug 25, 2016

Last modifiedJun 17, 2026

Added to KEVMay 24, 2022

Remediation dueJun 14, 2022

References

lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlBroken LinkMailing List
securityfocus.com/bid/92652Broken LinkThird Party Advisory
securitytracker.com/id/1036694Broken LinkThird Party Advisory
blog.lookout.com/blog/2016/08/25/trident-pegasus/Broken Link
support.apple.com/HT207107Release NotesVendor Advisory
exploit-db.com/exploits/44836/ExploitThird Party Advisory
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656US Government Resource

0 recent articles mention this CVE

Risk assessment · High

Actively exploited. Patch immediately.

Exploitation: Confirmed in the wild (CISA KEV)
Federal remediation deadline: Overdue by 1596 days
CVSS: 7.8 HIGH
EPSS (30-day exploit probability): 23.6% · top 2% of all CVEs
Weakness: CWE-787

Recommended actions

1.Apply updates per vendor instructions.
2.Treat as emergency change: patch or isolate internet-facing instances first.
3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.

Assessment is derived automatically from the live signals above; verify against your own asset inventory.