CVE-2016-4656
The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2016-4656- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 9.3 High
AV:N/AC:M/Au:N/C:C/I:C/A:C - Weakness
- CWE-787
- Updated
- 2026-11-02
CVE List
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.
- Record
CVE-2016-4656- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
EUVDEUVD-2016-5642
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.
- Record
EUVD-2016-5642- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-6x59-8x45-xrp8
The kernel in Apple iOS before 9.3.5 allows attackers to execute arbitrary code in a privileged...
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.
- Record
GHSA-6x59-8x45-xrp8- CVSS 3.0
- 7.8 High
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-787
- Updated
- 2026-11-02
CISA KEV No score
Apple iOS Memory Corruption Vulnerability
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.
- Record
CVE-2016-4656- Weakness
- CWE-264
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Metasploit | WebKit not_number defineProperties UAF | 2016-08-25 |
| Exploit-DB | WebKit - not_number defineProperties UAF (Metasploit) | 2018-06-05 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploitation, exploits | ||
| first indexed | CVE List, EUVD, Exploit-DB, GitHub Advisories, CISA KEV, Metasploit, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-4656 is a high vulnerability (CVSS 7.8) in Apple Ios, published August 25, 2016. CISA lists it as known to be exploited, since May 24, 2022. EUVD reports exploitation since May 24, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 23.6%, the 97th percentile. No source names a fixed version.
References
blog.lookout.com/blog/2016/08/25/trident-pegasus
exploit-db.com/exploits/44836
support.apple.com/HT207107
lists.apple.com/archives/security-announce/2016/Aug/msg00000.html
securityfocus.com/bid/92652
securitytracker.com/id/1036694
cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656
nvd.nist.gov/vuln/detail/CVE-2016-4656
github.com/advisories/GHSA-6x59-8x45-xrp8