CVE-2020-9819: Apple iOS, iPadOS, and watchOS Memory Corruption Vulnerability

CVE-2020-9819 · Severity: critical · CVSS 4.3 · Exploited in the wild · Published 2021-11-03

A memory corruption vulnerability in Apple iOS, iPadOS, and watchOS Mail allows for heap corruption when processing a maliciously crafted email message. The issue stems from improper memory handling and was addressed by improving memory consumption management.

Technologies: Apple iPadOS, Apple watchOS. Vendors: Apple.

Quick answers

Is CVE-2020-9819 exploited in the wild?
Yes. CVE-2020-9819 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-9819?
Critical severity, with a CVSS score of 4.3, published 3 November 2021.
Which products and versions are affected?
Apple iOS < 12.4.7, 13.0 to < 13.5; Apple iPadOS < 13.5; Apple watchOS < 5.3.7, 6.0 to < 6.2.5.
Is there a fix for CVE-2020-9819?
A patch was published on 2020-05-20: Fixed in iOS 13.5, iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5, and watchOS 5.3.7 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2020-9819 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2020-9819?
Check whether you run Apple iPadOS or Apple watchOS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Apple iOS < 12.4.7, 13.0 to < 13.5
  • Apple iPadOS < 13.5
  • Apple watchOS < 5.3.7, 6.0 to < 6.2.5

Timeline

  • 2020-06-09: disclosed: NVD Published Date
  • 2020-05-20: patched: Fixed in iOS 13.5, iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5, and watchOS 5.3.7
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Reported as exploited in the wild per CISA KEV catalog entry.

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