HIGH KEV
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
Published Aug 25, 2016 ·Due Jun 14, 2022
7.8
HIGHCVSS 3.1
EPSS 23.63%
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.8 HIGH NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
9.3 HIGH NVD
AV:N/AC:M/Au:N/C:C/I:C/A:C
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Complete
Integrity Impact Complete
Availability Impact Complete
Listed in CISA KEV KEV
Date Added
May 24, 2022
Patch Due
Jun 14, 2022
Required Action
Apply updates per vendor instructions.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
ActiveAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jan 29, 2025 · SSVC 2.0.3
23.63% 0.23626
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.23626
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (35 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 23.63% (0.23626) | 97.74th | v5 (v2026.06.15) |
| Aug 24, 2026 | 23.63% (0.23626) | 97.63th | v5 (v2026.06.15) |
| Jul 24, 2026 | 21.34% (0.21341) | 97.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 23.63% (0.23626) | 97.51th | v5 (v2026.06.15) |
| May 13, 2026 | 65.33% (0.65330) | 98.51th | v4 (v2025.03.14) |
| Mar 1, 2026 | 66.74% (0.66743) | 98.52th | v4 (v2025.03.14) |
| Feb 8, 2026 | 67.91% (0.67910) | 98.54th | v4 (v2025.03.14) |
| Jan 29, 2026 | 66.74% (0.66743) | 98.50th | v4 (v2025.03.14) |
| Dec 2, 2025 | 73.33% (0.73334) | 98.74th | v4 (v2025.03.14) |
| Oct 21, 2025 | 71.94% (0.71941) | 98.67th | v4 (v2025.03.14) |
| Sep 13, 2025 | 76.22% (0.76221) | 98.89th | v4 (v2025.03.14) |
| Aug 10, 2025 | 74.51% (0.74506) | 98.79th | v4 (v2025.03.14) |
| Jul 20, 2025 | 70.30% (0.70303) | 98.59th | v4 (v2025.03.14) |
| Mar 30, 2025 | 68.35% (0.68346) | 98.49th | v4 (v2025.03.14) |
| Mar 29, 2025 | 64.48% (0.64485) | 97.83th | v4 (v2025.03.14) |
| Mar 17, 2025 | 68.35% (0.68346) | 98.50th | v4 (v2025.03.14) |
| Mar 1, 2025 | 4.34% (0.04340) | 92.42th | v3 (v2023.03.01) |
| Dec 17, 2024 | 7.07% (0.07073) | 93.91th | v3 (v2023.03.01) |
| Oct 23, 2024 | 4.99% (0.04988) | 93.03th | v3 (v2023.03.01) |
| Aug 12, 2024 | 7.17% (0.07173) | 94.10th | v3 (v2023.03.01) |
| Aug 11, 2024 | 4.22% (0.04224) | 92.37th | v3 (v2023.03.01) |
| Jul 19, 2024 | 7.17% (0.07173) | 94.07th | v3 (v2023.03.01) |
| Jul 3, 2024 | 6.34% (0.06341) | 93.69th | v3 (v2023.03.01) |
| Jun 17, 2024 | 0.91% (0.00911) | 82.90th | v3 (v2023.03.01) |
| May 15, 2024 | 0.64% (0.00643) | 79.17th | v3 (v2023.03.01) |
| Apr 12, 2024 | 0.59% (0.00586) | 77.87th | v3 (v2023.03.01) |
| Mar 9, 2024 | 0.56% (0.00557) | 77.09th | v3 (v2023.03.01) |
| Jan 2, 2024 | 0.55% (0.00552) | 75.08th | v3 (v2023.03.01) |
| Oct 10, 2023 | 0.46% (0.00456) | 72.39th | v3 (v2023.03.01) |
| Oct 9, 2023 | 0.59% (0.00592) | 75.82th | v3 (v2023.03.01) |
| May 8, 2023 | 0.46% (0.00456) | 71.52th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.44% (0.00439) | 70.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.19% (0.02194) | 81.07th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.19% (0.02194) | 79.25th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.19% (0.02194) | 57.97th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html vendor-advisoryx_refsource_APPLEBroken LinkMailing ListVendor Advisory
- http://www.securityfocus.com/bid/92652 vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1036694 vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry
- https://blog.lookout.com/blog/2016/08/25/trident-pegasus/ x_refsource_MISCBroken Link
- https://support.apple.com/HT207107 x_refsource_CONFIRMRelease NotesVendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656 government-resourceUS Government Resource
- https://www.exploit-db.com/exploits/44836/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
| Link | Providers | Tags |
|---|---|---|
| http://lists.apple.com/archives/security-announce/2016/Aug/msg00000.html | vendor-advisoryx_refsource_APPLEBroken LinkMailing ListVendor Advisory | |
| http://www.securityfocus.com/bid/92652 | vdb-entryx_refsource_BIDBroken LinkThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1036694 | vdb-entryx_refsource_SECTRACKBroken LinkThird Party AdvisoryVDB Entry | |
| https://blog.lookout.com/blog/2016/08/25/trident-pegasus/ | x_refsource_MISCBroken Link | |
| https://support.apple.com/HT207107 | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4656 | government-resourceUS Government Resource | |
| https://www.exploit-db.com/exploits/44836/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apple
Published Aug 25, 2016
Updated Oct 21, 2025
Reserved May 11, 2016
Link CVE-2016-4656
CISA Vulnrichment
Updated Jan 29, 2025