CVE-2016-4711

CCrypt in corecrypto in CommonCrypto in Apple iOS before 10 and OS X before 10.12 allows...

7.5 High

CCrypt in corecrypto in CommonCrypto in Apple iOS before 10 and OS X before 10.12 allows attackers to discover cleartext information by leveraging a function call that specifies the same buffer for input and output.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

1.61%Up 0.5 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2016-4711
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-20, CWE-200
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-4711
Updated: 2026-11-02

EUVDEUVD-2016-5696 No score

Record: EUVD-2016-5696
Updated: 2026-11-03

GitHub AdvisoriesGHSA-j6v5-rmwq-g87g 7.5

CCrypt in corecrypto in CommonCrypto in Apple iOS before 10 and OS X before 10.12 allows...

Record: GHSA-j6v5-rmwq-g87g
CVSS 3.0: 7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-20, CWE-200
Updated: 2026-11-02

Affected products

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-4711 is a high vulnerability (CVSS 7.5) in Apple Iphone Os, published September 25, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.61%, the 75th percentile. No source names a fixed version.