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High 7.8Known exploited (CISA KEV)Published Aug 25, 2016
CVE-2016-4656The 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.
Updated under an hour ago ()
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It affects apple iphone_os. Add what you run to find out whether that includes you.
CISA lists it as known exploited since May 24, 2022; federal agencies had to remediate by Jun 14, 2022. Treat that date as your deadline.
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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
- 7.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Added to CISA KEV May 24, 2022; federal remediation due Jun 14, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 23.63% (percentile 98)
- Assigned by
- apple
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
apple iphone_os apple:iphone_os | before 9.3.5 | NVD |
References
- https://blog.lookout.com/blog/2016/08/25/trident-pegasus/x-refsource-misc, broken-link
- https://www.exploit-db.com/exploits/44836/exploit, x-refsource-exploit-db, third-party-advisory, vdb-entry
- https://support.apple.com/HT207107x-refsource-confirm, release-notes, vendor-advisory
- http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.htmlvendor-advisory, x-refsource-apple, broken-link, mailing-list
- http://www.securityfocus.com/bid/92652vdb-entry, x-refsource-bid, broken-link, third-party-advisory
- http://www.securitytracker.com/id/1036694vdb-entry, x-refsource-sectrack, broken-link, third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656us-government-resource
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.