CVE-2021-1857: apple icloud Improper Initialization
Vulnerability summary
CVE-2021-1857 is a medium (CVSS 6.5) Improper Initialization vulnerability in apple icloud. EPSS estimates a 1.22% chance of exploitation in the next 30 days, higher than 68.3% of scored vulnerabilities.
Timeline
- 08-09-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A memory initialization issue was addressed with improved memory handling. This issue is fixed in iTunes 12.11.3 for Windows, Security Update 2021-002 Catalina, Security Update 2021-003 Mojave, iCloud for Windows 12.3, macOS Big Sur 11.3, watchOS 7.4, tvOS 14.5, iOS 14.5 and iPadOS 14.5. Processing maliciously crafted web content may disclose sensitive user information.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.22%
Chance of exploitation in the next 30 days
Percentile
68%
Versus all other CVEs
30-day change
0.00 pp
From 1.22% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apple11 products
- icloud< 12.3
- icloud for windows≥ unspecified, < 12.3
- ios and ipados≥ unspecified, < 14.5
- ipados< 14.5
- iphone_os< 14.5
1 vendor · 11 products