CVE-2016-4639

Severity: high (CVSS 7.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-07-22 · updated 2026-06-17

Description

Login Window in Apple OS X before 10.11.6 does not properly initialize memory, which allows local users to cause a denial of service via unspecified vectors.

Affected products

macOS: through 10.11.5

References

http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
http://www.securityfocus.com/bid/91824
http://www.securitytracker.com/id/1036348
http://zerodayinitiative.com/advisories/ZDI-16-431/
https://support.apple.com/HT206903
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
http://www.securityfocus.com/bid/91824
http://www.securitytracker.com/id/1036348
http://zerodayinitiative.com/advisories/ZDI-16-431/
https://support.apple.com/HT206903

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