High 7.5Published Sep 25, 2016

CVE-2016-4711CCrypt 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 i…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 7.5 HIGH (v3.0, NVD)CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-20, CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

apple iphone_os apple:iphone_os	through 9.3.5	NVD
apple mac_os_x apple:mac_os_x	through 10.11.6	NVD

References

References

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

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.