Out-of-bounds Read in Apple Icloud
CVE-2020-36521
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iCloud for Windows 11.4, iOS 14.0 and iPadOS 14.0, watchOS 7.0, tvOS 14.0, iCloud for Windows 7.21, iTunes for Windows 12.10.9. Processing a maliciously crafted tiff file may lead to a denial-of-service or potentially disclose memory contents.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (36.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Apple Icloud
- Apple Icloud For Windows — versions unspecified
- Apple iOS And Ipados — versions unspecified
- Apple Ipados
- Apple Iphone OS
- Apple Itunes
- Apple Itunes For Windows — versions unspecified
- Apple macOS
- Apple tvOS
- Apple watchOS — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/en-us/HT211843 (Vendor Advisory)
- support.apple.com/en-us/HT211850 (Vendor Advisory)
- support.apple.com/en-us/HT211844 (Vendor Advisory)
- support.apple.com/en-us/HT211952 (Vendor Advisory)
- support.apple.com/en-us/HT211847 (Vendor Advisory)
- support.apple.com/en-us/HT211846 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-36521?
- CVE-2020-36521 is a high-severity vulnerability in Apple Icloud, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2022-09-23.
- How severe is CVE-2020-36521?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2020-36521 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.