CVE-2016-4711

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-09-25 · updated 2026-06-17
Weakness: CWE-20

Description

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.

Affected products

Apple Iphone Os: through 9.3.5
macOS: through 10.11.6

References

http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://www.securityfocus.com/bid/93056
http://www.securitytracker.com/id/1036858
https://support.apple.com/HT207143
https://support.apple.com/HT207170
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://www.securityfocus.com/bid/93056
http://www.securitytracker.com/id/1036858
https://support.apple.com/HT207143
https://support.apple.com/HT207170

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