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Vulnerability record · CVE-2016-4658 · published 25 September 2016

CVE-2016-4658: Apple iphone os memory buffer overflow vulnerability

Apple · Iphone Os

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.

9.8 CVSS 3.0 Critical EPSS 8.6% · top 5.1% CWE-119 · Memory buffer overflow
9.8CVSS 3.0 base score, v2 10.0
8.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
26References
17 Jun 2026Last modified by NVD

Description

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html Mailing ListVendor Advisory
http://www.securityfocus.com/bid/93054 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036858 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038623 Third Party AdvisoryVDB Entry
https://git.gnome.org/browse/libxml2/commit/?id=c1d1f7121194036608bf555f08d3062a36fd344b PatchThird Party Advisory
https://security.gentoo.org/glsa/201701-37 Third Party Advisory
https://support.apple.com/HT207141 Vendor Advisory
https://support.apple.com/HT207142 Vendor Advisory
https://support.apple.com/HT207143 Vendor Advisory
https://support.apple.com/HT207170 Vendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html Mailing ListVendor Advisory
http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html Mailing ListVendor Advisory
http://www.securityfocus.com/bid/93054 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1036858 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038623 Third Party AdvisoryVDB Entry
https://git.gnome.org/browse/libxml2/commit/?id=c1d1f7121194036608bf555f08d3062a36fd344b PatchThird Party Advisory
https://security.gentoo.org/glsa/201701-37 Third Party Advisory
https://support.apple.com/HT207141 Vendor Advisory
https://support.apple.com/HT207142 Vendor Advisory
https://support.apple.com/HT207143 Vendor Advisory
https://support.apple.com/HT207170 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-4658), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.