Out-of-bounds Read in Apple iOS And Ipados
CVE-2021-30733
An out-of-bounds read was addressed with improved input validation. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave, macOS Big Sur 11.4, watchOS 7.5. Processing a maliciously crafted font may result in the disclosure of process memory.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (61.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 61.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Apple iOS And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone OS
- Apple macOS — versions unspecified
- Apple Mac OS X — versions 10.14.6, 10.15, 10.15.1
- Apple tvOS
- Apple watchOS
Weakness classification (CWE)
References
- support.apple.com/en-us/HT212600 (Vendor Advisory)
- support.apple.com/en-us/HT212603 (Vendor Advisory)
- support.apple.com/en-us/HT212528 (Vendor Advisory)
- support.apple.com/en-us/HT212529 (Vendor Advisory)
- support.apple.com/en-us/HT212532 (Vendor Advisory)
- support.apple.com/en-us/HT212533 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30733?
- CVE-2021-30733 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2021-09-08.
- How severe is CVE-2021-30733?
- Medium severity. CVSS v3 base score is 5.5 out of 10.