Out-of-bounds Read in Apple iOS And Ipados
CVE-2021-30939
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing a maliciously crafted image may lead to arbitrary code execution.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.041 (90.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.041 · newest: 0.041 · 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 10.15.7
- Apple tvOS
- Apple watchOS — versions unspecified
Weakness classification (CWE)
References
- support.apple.com/en-us/HT212975
- support.apple.com/en-us/HT212976
- support.apple.com/en-us/HT212978
- support.apple.com/en-us/HT212979
- support.apple.com/en-us/HT212981
- support.apple.com/en-us/HT212980
- www.talosintelligence.com/vulnerability_reports/TALOS-2021-1414
- www.zerodayinitiative.com/advisories/ZDI-22-359/
Frequently asked questions
- What is CVE-2021-30939?
- CVE-2021-30939 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2021-08-24.
- How severe is CVE-2021-30939?
- High severity. CVSS v3 base score is 7.8 out of 10.