CVE-2020-9818
HIGH KEViPadOS < 13.5 - Out-of-bounds Write via Maliciously Crafted Mail Message
Title source: llmExploitation Summary
CVE-2020-9818 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
Description
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.
References (4)
Core 4
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/HT211168
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/HT211175
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/HT211169
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9818
Scores
CVSS v3
8.8
EPSS
0.0087
EPSS Percentile
75.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2020-04-22
InTheWild.io
2021-07-23
ENISA EUVD
EUVD-2020-30597
CWE
CWE-787
Status
published
Products (3)
apple/ipados
< 13.5
apple/iphone_os
< 12.4.7
apple/watchos
< 6.2.5
Published
Jun 09, 2020
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026