CVE-2016-4658

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Summary

CVECVE-2016-4658
StatePUBLISHED
Assignerapple
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-09-25 10:59:02 UTC
Updated2026-05-06 22:30:45 UTC
Descriptionxpointer.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.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

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

EPSS: 0.177140000 probability, percentile 0.951440000 (date 2026-05-06)

Problem Types: CWE-119 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary10AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Apple Iphone Os All All All All
Operating System Apple Mac Os X All All All All
Operating System Apple Tvos All All All All
Operating System Apple Watchos All All All All
Application Xmlsoft Libxml2 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
APPLE-SA-2016-09-20-5 watchOS 3 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Mailing List, Vendor Advisory
About the security content of iOS 10 - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Vendor Advisory
Disallow namespace nodes in XPointer ranges (c1d1f712) · Commits · GNOME / libxml2 · GitLab af854a3a-2127-422b-91ae-364da2661108 git.gnome.org Patch, Third Party Advisory
About the security content of tvOS 10 - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Vendor Advisory
About the security content of macOS Sierra 10.12 - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Vendor Advisory
libxml2: Multiple vulnerabilities (GLSA 201701-37) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
About the security content of watchOS 3 - Apple Support af854a3a-2127-422b-91ae-364da2661108 support.apple.com Vendor Advisory
APPLE-SA-2016-09-20 macOS Sierra 10.12 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Mailing List, Vendor Advisory
Google Android Multiple Flaws Let Remote Users Deny Service, Obtain Potentially Sensitive Information, and Execute Arbitrary Code and Let Local Apps Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
APPLE-SA-2016-09-20-6 tvOS 10 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Mailing List, Vendor Advisory
Apple iOS/tvOS/MacOS/watchOS Multiple Security Vulnerabilities af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Apple macOS/OS X Multiple Flaws Let Remote and Local Users Deny Service, Obtain Potentially Sensitive Information, Execute Arbitrary Code, and Gain Elevated Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com Third Party Advisory, VDB Entry
APPLE-SA-2016-09-20-3 iOS 10 af854a3a-2127-422b-91ae-364da2661108 lists.apple.com Mailing List, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159417 Oracle Enterprise Linux Security Update for libxml2 (ELSA-2021-3810)
  • 239673 Red Hat Update for libxml2 (RHSA-2021:3810)
  • 257124 CentOS Security Update for libxml2 (CESA-2021:3810)
  • 375544 Libxml2 Arbitrary Code Execution Vulnerability
  • 377481 Alibaba Cloud Linux Security Update for libxml2 (ALINUX2-SA-2021:0058)
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 904904 Common Base Linux Mariner (CBL-Mariner) Security Update for gettext (12337)
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