CVE-2021-1791

🗓️ 22 May 2025 21:17:12Reported by redhat.comType

redhatcve

redhatcve🔗 access.redhat.com👁 6 Views

Out-of-bounds read vulnerability in kernel memory fixed in multiple Apple software updates.

Reporter	Title	Published	Views	Family All 21
Apple	About the security content of iOS 14.4 and iPadOS 14.4	26 Jan 202100:00	–	apple
Apple	About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave	1 Feb 202100:00	–	apple
Apple	About the security content of watchOS 7.3	26 Jan 202100:00	–	apple
Apple	About the security content of tvOS 14.4	26 Jan 202100:00	–	apple
Apple	About the security content of iOS 14.4 and iPadOS 14.4 - Apple Support	1 Feb 202106:39	–	apple
Apple	About the security content of macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave - Apple Support	18 Feb 202106:14	–	apple
Apple	About the security content of watchOS 7.3 - Apple Support	1 Feb 202106:39	–	apple
Apple	About the security content of tvOS 14.4 - Apple Support	1 Feb 202106:39	–	apple
Tenable Nessus	Apple iOS < 14.4 Multiple Vulnerabilities (HT212146)	29 Jan 202100:00	–	nessus
Tenable Nessus	macOS 10.14.x < 10.14.6 Security Update 2021-001 / 10.15.x < 10.15.7 Security Update 2021-001 / macOS 11.x < 11.2 (HT212147)	3 Feb 202100:00	–	nessus

Source	Link
cve	www.cve.org/CVERecord

27 Mar 2026 15:05Current

5.3Medium risk

Vulners AI Score5.3

CVSS 3.15.5

CVSS 27.1

EPSS0.00558

vulnerability disclosure kernel memory apple software updates input validation malicious application