CVE-2020-3843

HIGH
8.8
CVSS Score
Published: February 27, 2020 at 08:45 PM UTC
Updated: June 17, 2026 at 03:19 AM UTC
2 products affected across 1 vendoriPhone OSwatchOS

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Severity
HIGH8.8
Exploit prediction
EPSS 4%

Description

A memory corruption issue was addressed with improved input validation. This issue is fixed in iOS 12.4.7, watchOS 5.3.7. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 12.4.7v < iOS 12.4.7
Affected range stops below 12.4.7, so it looks safe — our inference, not a vendor statement
Affected range stops below iOS 12.4.7, so it looks safe — our inference, not a vendor statement
v < 5.3.7v < watchOS 5.3.7
Affected range stops below 5.3.7, so it looks safe — our inference, not a vendor statement
Affected range stops below watchOS 5.3.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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