Vulnerability in Apple iOS And Ipados
CVE-2021-1820
A memory initialization issue was addressed with improved memory handling. This issue is fixed in macOS Big Sur 11.3, iOS 14.5 and iPadOS 14.5, watchOS 7.4, tvOS 14.5. Processing maliciously crafted web content may result in the disclosure of process memory.
Vulnerability class: Dirty Pipe (CVE-2022-0847)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.013 (70.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: +0.000
Affected products
- Apple iOS And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone OS
- Apple macOS — versions unspecified
- Apple tvOS — versions unspecified
- Apple watchOS — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT212317 (Vendor Advisory)
- support.apple.com/en-us/HT212323 (Vendor Advisory)
- support.apple.com/en-us/HT212324 (Vendor Advisory)
- support.apple.com/en-us/HT212325 (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-1820?
- CVE-2021-1820 is a medium-severity vulnerability in Apple iOS And Ipados, classified under Improper Initialization. CVSS score: 6.5/10. Published 2021-09-08.
- How severe is CVE-2021-1820?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2021-1820 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.