CVE-2021-30666

moderate-risk
Published 2021-09-08

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.5.3. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Do I need to act?

~
1.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
!
CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Apple

References (3)

Release Notes https://support.apple.com/en-us/HT212341
Release Notes https://support.apple.com/en-us/HT212341
Third Party Advisory https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-...
46
/ 100
moderate-risk
Severity 30/34 · Critical
Exploitability 11/34 · Low
Exposure 5/34 · Minimal