What’s Vulnerable › Vulnerabilities

CVE-2021-30760

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-09-08 · updated 2026-06-17
• Weakness: CWE-190

Description

An integer overflow was addressed through improved input validation. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7, Security Update 2021-005 Mojave, Security Update 2021-004 Catalina. Processing a maliciously crafted font file may lead to arbitrary code execution.

Affected products

• Apple iPadOS: before 14.7 — fixed in 14.7
• Apple Iphone Os: before 14.7 — fixed in 14.7
• macOS: 10.14, 10.14.0, 10.14.1, 10.14.2, 10.14.3, 10.14.4 (+38)
• Apple macOS: from 11.0 before 11.5 — fixed in 11.5
• Apple tvOS: before 14.7 — fixed in 14.7
• Apple watchOS: before 7.6 — fixed in 7.6

How to fix

Upgrade to a fixed version: Apple iPadOS 14.7; Apple Iphone Os 14.7; Apple macOS 11.5; Apple tvOS 14.7; Apple watchOS 7.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/en-us/HT212600
• https://support.apple.com/en-us/HT212601
• https://support.apple.com/en-us/HT212602
• https://support.apple.com/en-us/HT212603
• https://support.apple.com/en-us/HT212604
• https://support.apple.com/en-us/HT212605
• https://support.apple.com/en-us/HT212600
• https://support.apple.com/en-us/HT212601
• https://support.apple.com/en-us/HT212602
• https://support.apple.com/en-us/HT212603
• https://support.apple.com/en-us/HT212604
• https://support.apple.com/en-us/HT212605

Get alerted when CVE-2021-30760 or the next vulnerability affects your stack