Live › vulnerability › CVE-2020-9818
Go to dashboardApple's iOS, iPadOS and watchOS Mail app has an out-of-bounds write flaw triggered when it processes a specially crafted email. An attacker can corrupt memory, which can crash the app or be used to modify memory during an attack.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Apple iOS, iPadOS, and watchOS | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Update iOS, iPadOS and watchOS to a release that includes Apple's fix; CISA says to apply updates per vendor instructions.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5. Processing a maliciously crafted mail message may lead to unexpected memory modification or application termination.
This page as .md · .json · in your agent: get_signal("CVE-2020-9818")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.