CVE-2016-4644

moderate-risk

Published 2019-01-11

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.

Do I need to act?

0.43% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

NETWORK / LOW complexity

Affected Products (3)

Apple Tv

Iphone Os

Mac Os

Affected Vendors

Apple

References (6)

Vendor Advisory https://support.apple.com/HT206902

Vendor Advisory https://support.apple.com/HT206903

Vendor Advisory https://support.apple.com/HT206905

Vendor Advisory https://support.apple.com/HT206902

Vendor Advisory https://support.apple.com/HT206903

Vendor Advisory https://support.apple.com/HT206905

/ 100

moderate-risk

Severity 24/34 · High

Exploitability 2/34 · Minimal

Exposure 9/34 · Low