CVE-2021-30809

HIGH

Safari <15 - Use After Free

Title source: llm
STIX 2.1

Description

A use after free issue was addressed with improved memory management. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to arbitrary code execution.

Exploits (1)

nomisec WORKING POC 2 stars
by seregonwar · poc
https://github.com/seregonwar/CVE-2021-30809-OOM

References (6)

Core 6
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212814
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212819
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212815
Release Notes, Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT212816
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT212869
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/12/20/6

Scores

CVSS v3 8.8
EPSS 0.0039
EPSS Percentile 59.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-416
Status published
Products (6)
apple/ipados < 15.0
apple/iphone_os < 15.0
apple/macos < 12.0.1
apple/safari < 15.0
apple/tvos < 15.0
apple/watchos < 8.0
Published Oct 28, 2021
Tracked Since Feb 18, 2026