CVE-2016-4655

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.334 · 98 %ileexploit · functionalEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 4 exploits · functional

Likely / severe?

33.4% (98th) EPSS

CVSS 7.1 · high

Is it mine?

5 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2022-05-24remediate by 2022-06-14

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

Apple iOS Information Disclosure Vulnerability

The kernel in Apple iOS before 9.3.5 allows attackers to obtain sensitive information from memory via a crafted app.

cvss

Technical severity, 0–10. One row per scoring source.

7.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.5–7.1

v2.07.1highAV:N/AC:M/Au:N/C:C/I:N/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 6.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumAV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondary · ENISA EU

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondaryexploitability 1.8 · impact 3.6

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200US

exploits (4)

Public proof-of-concept and weaponised exploit code.

EDB-44836WebKit - not_number defineProperties UAF (Metasploit)functional · exploit_db
exploit/apple_ios/browser/webkit_tridentWebKit not_number defineProperties UAFPoC · metasploit
Cryptiiiic/skybreak8.4.1 Jailbreak using CVE-2016-4655 / CVE-2016-4656PoC · poc_in_github
jndok/PegasusXOS X 10.11.6 LPE PoC for CVE-2016-4655 / CVE-2016-4656PoC · poc_in_github

affected products (5)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Apple Inc. iOS≤ 10.0.1fstec_bduRU
Apple Inc. iOS≤ 9.3.5fstec_bduRU
apple iphone os< 9.3.5nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone os= 10.0nvdUScpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2016-08-25modified 2026-06-17

references (21)

External citations — patches, advisories, analysis.

scry

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