CVE-2015-5859

Name: CVE-2015-5859
Creator: NVD / NIST
Published: 2015-11-22T03:59:01.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.45%

Last modified Jun 17, 2026

CVE-2015-5859 is a vulnerability of currently unknown severity. The CFNetwork HTTPProtocol component in Apple iOS before 9 and OS X before 10.11 does not properly recognize the HSTS preload list during a Safari private-browsing session, which makes it easier for remote attackers to obtain sensitive information by sniffing the network.. EPSS estimates a 1.45% chance of exploitation in the next 30 days.

Description

The CFNetwork HTTPProtocol component in Apple iOS before 9 and OS X before 10.11 does not properly recognize the HSTS preload list during a Safari private-browsing session, which makes it easier for remote attackers to obtain sensitive information by sniffing the network.

Metrics

EPSS Probability

1.45%

70.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Apple	Mac Os X	<= 10.10.4
Apple	Iphone Os	<= 8.4.1

References

https://support.apple.com/HT205212Vendor Advisory
https://support.apple.com/HT205267
https://support.apple.com/HT205212Vendor Advisory
https://support.apple.com/HT205267

Timeline

Published: Nov 22, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-5859?

How severe is CVE-2015-5859?

Severity scoring for CVE-2015-5859 is pending analysis. The EPSS model estimates a 1.45% probability of exploitation in the next 30 days.

How do I fix CVE-2015-5859?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-5859?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST