CVE-2016-4738

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-09-25 · updated 2026-06-17
Weakness: CWE-119

Description

libxslt in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Affected products

Apple Iphone Os: before 10.0 — fixed in 10.0
macOS: before 10.12.0 — fixed in 10.12.0
Apple tvOS: before 10.0 — fixed in 10.0
Apple watchOS: before 3.0 — fixed in 3.0
Debian Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: Apple Iphone Os 10.0; macOS 10.12.0; Apple tvOS 10.0; Apple watchOS 3.0. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2016/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00008.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00010.html
http://lists.apple.com/archives/security-announce/2016/Sep/msg00011.html
http://www.debian.org/security/2016/dsa-3709
http://www.securityfocus.com/bid/93054
http://www.securitytracker.com/id/1036858
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SK4YNISS22MJY22YX5I6V2U63QZAUEHA/
https://support.apple.com/HT207141
https://support.apple.com/HT207142
https://support.apple.com/HT207143
https://support.apple.com/HT207170

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