CVE-2021-30799

high-risk
Published 2021-09-08

Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 14.7, macOS Big Sur 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Processing maliciously crafted web content may lead to arbitrary code execution.

Do I need to act?

~
1.0% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Apple

References (8)

Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212601
Vendor Advisory https://support.apple.com/en-us/HT212602
Vendor Advisory https://support.apple.com/en-us/HT212603
Vendor Advisory https://support.apple.com/en-us/HT212600
Vendor Advisory https://support.apple.com/en-us/HT212601
Vendor Advisory https://support.apple.com/en-us/HT212602
Vendor Advisory https://support.apple.com/en-us/HT212603
55
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 3/34 · Minimal
Exposure 22/34 · High