Use After Free in Apple iOS
CVE-2021-30795
A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.7, Safari 14.1.2, macOS Big Sur 11.5, watchOS 7.6, tvOS 14.7. Processing maliciously crafted web content may lead to arbitrary code execution.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.021 (81.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000
Affected products
- Apple iOS — versions unspecified
- Apple Iphone OS
- Apple macOS — versions unspecified
- Apple Safari
- Apple tvOS
- Apple watchOS
Weakness classification (CWE)
References
- support.apple.com/en-us/HT212601 (Vendor Advisory)
- support.apple.com/en-us/HT212602 (Vendor Advisory)
- support.apple.com/en-us/HT212605 (Vendor Advisory)
- support.apple.com/en-us/HT212604 (Vendor Advisory)
- support.apple.com/en-us/HT212606 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30795?
- CVE-2021-30795 is a high-severity vulnerability in Apple iOS, classified under Use After Free. CVSS score: 8.8/10. Published 2021-09-08.
- How severe is CVE-2021-30795?
- High severity. CVSS v3 base score is 8.8 out of 10.