What’s Vulnerable › Vulnerabilities

CVE-2016-4691

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-20 · updated 2026-06-17
• Weakness: CWE-119

Description

An issue was discovered in certain Apple products. iOS before 10.2 is affected. macOS before 10.12.2 is affected. watchOS before 3.1.3 is affected. The issue involves the "FontParser" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted font.

Affected products

• Apple Iphone Os: through 10.1.1
• macOS: through 10.12.1
• Apple watchOS: through 2.2.2

References

• http://www.securityfocus.com/bid/94905
• http://www.securitytracker.com/id/1037469
• https://support.apple.com/HT207422
• https://support.apple.com/HT207423
• https://support.apple.com/HT207487
• http://www.securityfocus.com/bid/94905
• http://www.securitytracker.com/id/1037469
• https://support.apple.com/HT207422
• https://support.apple.com/HT207423
• https://support.apple.com/HT207487

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