CVE-2015-5879

Name: CVE-2015-5879
Creator: NVD / NIST
Published: 2015-09-18T12:00:18.653+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.44%

Last modified Jun 17, 2026

CVE-2015-5879 is a vulnerability of currently unknown severity. XNU in the kernel in Apple iOS before 9 does not properly validate the headers of TCP packets, which allows remote attackers to bypass the sequence-number protection mechanism and cause a denial of service (TCP connection disruption) via a crafted header.. EPSS estimates a 2.44% chance of exploitation in the next 30 days.

Description

XNU in the kernel in Apple iOS before 9 does not properly validate the headers of TCP packets, which allows remote attackers to bypass the sequence-number protection mechanism and cause a denial of service (TCP connection disruption) via a crafted header.

Metrics

EPSS Probability

2.44%

82.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Apple	Iphone Os	<= 8.4.1
Apple	Mac Os X	<= 10.10.5

References

http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.htmlVendor Advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.htmlVendor Advisory
http://www.securityfocus.com/bid/76764
http://www.securitytracker.com/id/1033609
https://support.apple.com/HT205212Vendor Advisory
https://support.apple.com/HT205267Vendor Advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.htmlVendor Advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.htmlVendor Advisory
http://www.securityfocus.com/bid/76764
http://www.securitytracker.com/id/1033609
https://support.apple.com/HT205212Vendor Advisory
https://support.apple.com/HT205267Vendor Advisory

Timeline

Published: Sep 18, 2015
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-5879?

How severe is CVE-2015-5879?

Severity scoring for CVE-2015-5879 is pending analysis. The EPSS model estimates a 2.44% probability of exploitation in the next 30 days.

How do I fix CVE-2015-5879?

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-2015-5879?

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

Scan your code now

Source: NVD / NIST