Out-of-bounds Read in Apple iOS And Ipados
CVE-2021-1758
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause 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: 0.026 (84.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · 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, 10.15.7
- Apple tvOS
- Apple watchOS
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT212147 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212146 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212148 (Release Notes, Vendor Advisory)
- support.apple.com/en-us/HT212149 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1758?
- CVE-2021-1758 is a high-severity vulnerability in Apple iOS And Ipados, classified under Out-of-bounds Read. CVSS score: 7.8/10. Published 2021-04-02.
- How severe is CVE-2021-1758?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-1758 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.