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September 13, 2021 |

Apple updates address two currently exploited vulnerabilities

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On 13 September 2021, Apple released security updates to address two actively exploited vulnerabilities. We recommend applying the latest updates as soon as possible.


  • Both vulnerabilities require a victim user to open a web page or a document crafted by a threat actor for an execution to be successful.
    • The first issue, tracked as CVE-2021-30860, is an integer overflow flaw affecting Core Graphics, Apple's vector drawing framework. Processing a maliciously crafted PDF may lead to arbitrary code execution.
    • The second flaw, CVE-2021-30858, is a use-after-free issue in WebKit, a browser engine used in Safari and iOS web browsers. Processing maliciously crafted web content may lead to arbitrary code execution.
  • The following updates in Apple products would need to be applied to fix these vulnerabilities:
    • 2021-005 Catalina
    • macOS Big Sur 11.6
    • Safari 14.1.2
    • watchOS 7.6.2
    • iOS 14.8
    • iPadOS 14.8


  • If you are using any of the vulnerable Apple products, ensure you have the latest updates installed.
  • Check for and install software updates on your device manually by going to Settings > General > Software Update.