Medium severity6.5NVD Advisory· Published Jan 11, 2019· Updated Jun 17, 2026

CVE-2016-4644

Description

In iOS before 9.3.3, tvOS before 9.2.2, and OS X El Capitan before v10.11.6 and Security Update 2016-004, a downgrade issue existed with HTTP authentication credentials saved in Keychain. This issue was addressed by storing the authentication types with the credentials.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Apple Inc./TV
cpe:2.3:a:apple:apple_tv:*:*:*:*:*:*:*:*
Range: <9.2.2
Apple Inc./Iphone OS
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Range: <9.3.3
Apple Inc./macOS
cpe:2.3:o:apple:mac_os:*:*:*:*:*:*:*:*
Range: >=10.11.0,<10.11.6
Apple Inc./iOSllm-fuzzy
Range: <9.3.3
Apple Inc./tvOSllm-fuzzy
Range: <9.2.2
Apple Inc./OS X El Capitanllm-fuzzy2 versions
<v10.11.6 and Security Update 2016-004+ 1 more
- (no CPE)range: <v10.11.6 and Security Update 2016-004
- (no CPE)range: <10.11.6

Patches

Vulnerability mechanics

References

support.apple.com/HT206902nvdVendor Advisory
support.apple.com/HT206903nvdVendor Advisory
support.apple.com/HT206905nvdVendor Advisory

News mentions

No linked articles in our index yet.

cvss	0.423
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000