CVE-2016-4656VulnerabilityPublished 05/24/2022Updated 10/24/2026

CVE-2016-4656: Apple iOS Memory Corruption Vulnerability

Affects Apple iOSSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 05/24/2022
KEV deadline: 06/14/2022
EPSS: 23.6% chance of exploitation in 30 days – higher than 97% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2016-4656 (opens in a new tab)

Description

CVE-2016-4656 is a memory corruption vulnerability in the Apple iOS kernel that allows attackers to execute code with elevated privileges or cause a denial-of-service (DoS) by using a specially crafted application. This vulnerability has been exploited in the wild. No specific affected iOS versions or patch information is provided in the available data.

Summary

This vulnerability involves memory corruption in the Apple iOS kernel, enabling attackers to execute arbitrary code in a privileged context or trigger a denial-of-service condition. The flaw can be exploited via a crafted application. It is known to have been exploited in the wild. No vendor advisory or patch details are provided in the input data.

Impact

Successful exploitation can lead to arbitrary code execution with kernel-level privileges or denial-of-service on affected iOS devices. This elevates the attacker's capabilities significantly, potentially compromising device security and stability.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users and administrators should monitor Apple security advisories for updates and apply any released patches promptly.

Weaknesses

CWE-264Unclassified weakness (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:42:16 UTC

Weaknesses

References

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