CVE-2020-3846: apple icloud Improper Input Validation
Vulnerability summary
CVE-2020-3846 is a high (CVSS 8.8) Improper Input Validation vulnerability in apple icloud. EPSS estimates a 1.78% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities.
Timeline
- 27-02-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
A buffer overflow was addressed with improved size validation. This issue is fixed in iOS 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2, iTunes for Windows 12.10.4, iCloud for Windows 11.0, iCloud for Windows 7.17. Processing maliciously crafted XML may lead to an unexpected application termination or arbitrary code execution.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.78%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
0.00 pp
From 1.78% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
Affected systems
Apple12 products
- icloud< 7.17 | ≥ 10.0, < 10.8
- icloud for windows≥ unspecified, < iCloud for Windows 11.0
- icloud for windows (legacy)≥ unspecified, < iCloud for Windows 7.17
- ios≥ unspecified, < iOS 13.3.1 and iPadOS 13.3.1
- ipados< 13.3.1
1 vendor · 12 products