SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2021-30851

A memory corruption vulnerability was addressed with improved locking.

HIGH 8.8EPSS 2.39%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (2.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 15, tvOS 15, watchOS 8, iOS 15 and iPadOS 15. Processing maliciously crafted web content may lead to code execution.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
2.39% probability · 83th percentile
CISA KEV
Not listed
Weakness
CWE-787
Affected
apple/safari · apple/ipados · apple/iphone os · apple/macos · apple/tvos · apple/watchos · debian/debian linux · fedoraproject/fedora
Source
product-security@apple.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.