// For flags

CVE-2020-3856

Apple Security Advisory 2020-1-28-4

Severity Score

7.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A memory corruption issue 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 string may lead to heap corruption.

Se abordó un problema de corrupción de memoria con una comprobación de entrada mejorada. Este problema es corregido en iOS versión 13.3.1 y iPadOS versión 13.3.1, macOS Catalina versión 10.15.3, tvOS versión 13.3.1, watchOS versión 6.1.2. El procesamiento de una cadena diseñada maliciosamente puede conllevar a una corrupción de la pila.

macOS Catalina 10.15.3, Security Update 2020-001 Mojave, and Security Update 2020-001 High Sierra are now available and address buffer overflow, bypass, and code execution vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-12-18 CVE Reserved
  • 2020-01-29 CVE Published
  • 2020-02-13 First Exploit
  • 2024-08-04 CVE Updated
  • 2025-05-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-20: Improper Input Validation
  • CWE-787: Out-of-bounds Write
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apple
Search vendor "Apple"
 Ipados
Search vendor "Apple" for product "Ipados"
 < 13.3.1
Search vendor "Apple" for product "Ipados" and version " < 13.3.1"
-
Affected
Apple
Search vendor "Apple"
 Iphone Os
Search vendor "Apple" for product "Iphone Os"
 < 13.3.1
Search vendor "Apple" for product "Iphone Os" and version " < 13.3.1"
-
Affected
Apple
Search vendor "Apple"
 Mac Os X
Search vendor "Apple" for product "Mac Os X"
 < 10.15.3
Search vendor "Apple" for product "Mac Os X" and version " < 10.15.3"
-
Affected
Apple
Search vendor "Apple"
 Tvos
Search vendor "Apple" for product "Tvos"
 < 13.3.1
Search vendor "Apple" for product "Tvos" and version " < 13.3.1"
-
Affected
Apple
Search vendor "Apple"
 Watchos
Search vendor "Apple" for product "Watchos"
 < 6.1.2
Search vendor "Apple" for product "Watchos" and version " < 6.1.2"
-
Affected