PT-2020-6509 · Apple · Ios+2

Published 2020-05-20 · Updated 2025-10-23 · CVE-2020-9818

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Apple iOS versions prior to 13.5 Apple iPadOS versions prior to 13.5 Apple watchOS versions prior to 6.2.5 Apple iOS version 12.4.7 and earlier

Description An out-of-bounds write issue was addressed with improved bounds checking. Processing a maliciously crafted mail message may lead to unexpected memory modification or application termination. The vulnerability is related to the Mail client in the operating systems and can be exploited by a remote attacker to cause a denial of service.

Recommendations For Apple iOS versions prior to 13.5, update to iOS 13.5 or later. For Apple iPadOS versions prior to 13.5, update to iPadOS 13.5 or later. For Apple watchOS versions prior to 6.2.5, update to watchOS 6.2.5 or later. For Apple iOS version 12.4.7 and earlier, update to iOS 12.4.7 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2021-05692

CVE-2020-9818

Affected Products

Ios

Ipados

Watchos

References · 10

• https://support.apple.com/HT211168 · Vendor Advisory
• https://support.apple.com/HT211169 · Vendor Advisory
• https://support.apple.com/HT211175 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-9818 · Security Note
• https://osv.dev/vulnerability/CVE-2020-9818 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05692 · Security Note
• https://cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9818 · Note
• https://t.me/cvenotify/112790 · Telegram Post
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note
• https://t.me/cveNotify/140052 · Telegram Post