CVE-2020-9818: Apple iOS, iPadOS, and watchOS Out-of-Bounds Write Vulnerability

CVE-2020-9818 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2021-11-03

An out-of-bounds write vulnerability in the Mail component of Apple iOS, iPadOS, and watchOS allows for memory modification or application termination. The flaw is triggered when the system processes a maliciously crafted email message and was addressed through improved bounds checking.

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

Quick answers

Is CVE-2020-9818 exploited in the wild?
Yes. CVE-2020-9818 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2020-9818?
Critical severity, with a CVSS score of 8.8, 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 < 6.2.5.
Is there a fix for CVE-2020-9818?
A patch was published on 2020-05-20: Fixed in iOS 13.5, iPadOS 13.5, iOS 12.4.7, and watchOS 6.2.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2020-9818 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2020-9818?
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 < 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, and watchOS 6.2.5
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2021-11-03: exploited: Reported as exploited in the wild in CISA KEV catalog

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.