CVE-2016-4642
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, proxy authentication incorrectly reported HTTP proxies received credentials securely.
Does this matter?
Lower severity and a low EPSS score (1.34%). Track it; it rarely justifies an emergency change on its own.
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, proxy authentication incorrectly reported HTTP proxies received credentials securely. This issue was addressed through improved warnings.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.34% probability · 71th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-254
- Affected
- apple/apple tv · apple/iphone os · apple/mac os
- Source
- product-security@apple.com
EPSS 1.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://support.apple.com/HT206902Vendor Advisory
- https://support.apple.com/HT206903Vendor Advisory
- https://support.apple.com/HT206905Vendor Advisory
- https://support.apple.com/HT206902Vendor Advisory
- https://support.apple.com/HT206903Vendor Advisory
- https://support.apple.com/HT206905Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.