What’s Vulnerable › Vulnerabilities

CVE-2016-4448

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-06-09 · updated 2026-06-17
• Weakness: CWE-134

Description

Format string vulnerability in libxml2 before 2.9.4 allows attackers to have unspecified impact via format string specifiers in unknown vectors.

Affected products

• Apple iCloud for Windows: before 5.2.1 — fixed in 5.2.1
• Apple Iphone Os: through 9.3.2
• Apple iTunes for Windows: through 12.4.1
• macOS: before 10.11.6 — fixed in 10.11.6
• Apple tvOS: through 9.2.1
• Apple watchOS: through 2.2.1
• Hewlett Packard Enterprise IceWall Federation Agent: 3.0
• McAfee Web Gateway (MWG): through 7.5.2.10; from 7.6.0.0 through 7.6.2.3
• Oracle Corporation Oracle Linux: 6, 7-0
• Oracle Vm Server: 3.3, 3.4
• RedHat Enterprise Linux Desktop: 6.0, 7.0
• RedHat Enterprise Linux Server: 6.0, 7.0
• RedHat Enterprise Linux Server Aus: 7.2, 7.3, 7.4, 7.6, 7.7
• RedHat Enterprise Linux Server Eus: 7.2, 7.3, 7.4, 7.5, 7.6, 7.7
• RedHat Enterprise Linux Server Tus: 7.2, 7.3, 7.6, 7.7
• RedHat Enterprise Linux Workstation: 6.0, 7.0
• Slackware Linux: 14.0, 14.1
• Tenable Log Correlation Engine: 4.8.0
• xmlsoft libxml2: through 2.9.3

How to fix

Upgrade to a fixed version: Apple iCloud for Windows 5.2.1; macOS 10.11.6. Check the vendor advisory for mitigations.

References

• http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html
• http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html
• http://rhn.redhat.com/errata/RHSA-2016-2957.html
• http://www.openwall.com/lists/oss-security/2016/05/25/2
• http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html
• http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
• http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
• http://www.securityfocus.com/bid/90856
• http://www.securitytracker.com/id/1036348

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