PT-2020-6511 · Apple · Ios+2

Ian Beer · Published 2020-03-09 · Updated 2025-10-23 · CVE-2020-9819

Positive Technologies (AI Summary)

CVSS v2.0

4.3

Medium

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

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 and 5.3.7

Description The issue is related to a memory corruption vulnerability in the Mail client of iOS, iPadOS, and watchOS operating systems. It occurs when processing malicious email messages, allowing a remote attacker to cause a denial of service due to a buffer overflow in memory. The vulnerability can be exploited by processing a maliciously crafted mail message, which may lead to heap corruption.

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 watchOS versions prior to 5.3.7, update to watchOS 5.3.7 or later.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

BDU:2021-05695

CVE-2020-9819

Affected Products

Ios

Ipados

Watchos

References · 11

• https://support.apple.com/HT211168 · Vendor Advisory
• https://support.apple.com/HT211169 · Vendor Advisory
• https://support.apple.com/HT211176 · Vendor Advisory
• https://support.apple.com/HT211175 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05695 · Security Note
• https://osv.dev/vulnerability/CVE-2020-9819 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-9819 · Security Note
• https://t.me/cveNotify/140053 · Telegram Post
• https://cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9819 · Note
• https://cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv · Note
• https://t.me/cvenotify/112791 · Telegram Post