CVE-2020-3878
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13...
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing a maliciously crafted image may lead to arbitrary code execution.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing a maliciously crafted image may lead to arbitrary code execution.
- Record
CVE-2020-3878- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE ListNo score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing a maliciously crafted image may lead to arbitrary code execution.
- Record
CVE-2020-3878- Updated
- 2026-11-02
EUVDEUVD-2020-25143No score
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13.5 and iPadOS 13.5, macOS Catalina 10.15.5, tvOS 13.4.5, watchOS 6.2.5, iTunes 12.10.7 for Windows, iCloud for Windows 11.2, iCloud for Windows 7.19. Processing a maliciously crafted image may lead to arbitrary code execution.
- Record
EUVD-2020-25143- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8vpv-x7vv-g726
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 13...
An out-of-bounds read was addressed with improved input 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. Processing a maliciously crafted image may lead to arbitrary code execution.
- Record
GHSA-8vpv-x7vv-g726- CVSS 3.1
- 7.8 High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-125
- Updated
- 2026-11-02
Affected products
- apple icloud
- apple icloud for windows
- apple ios
- apple ipados
- apple itunes
- apple macos
- apple tvos
- apple watchos
- apple icloud for windows (legacy)
- apple iphone os
- apple itunes for windows
- apple mac os x
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History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-3878 is a high vulnerability (CVSS 7.8) in Apple Icloud, published February 27, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 9.13%, the 95th percentile. No source names a fixed version.
References
support.apple.com/HT211168
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nvd.nist.gov/vuln/detail/CVE-2020-3878
seclists.org/fulldisclosure/2020/May/49
github.com/advisories/GHSA-8vpv-x7vv-g726