CVE-2020-9905

HIGH
7.5
CVSS Score
Published: October 22, 2020 at 06:04 PM UTC
Updated: June 17, 2026 at 03:28 AM UTC
4 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity
HIGH7.5
Exploit prediction
EPSS 3%

Description

A buffer overflow was addressed with improved bounds checking. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8. A remote attacker may be able to cause a denial of service.

Affected

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

v < 13.6
Affected range stops below 13.6, so it looks safe — our inference, not a vendor statement
v < 13.6v < iOS 13.6 and iPadOS 13.6
Affected range stops below 13.6, so it looks safe — our inference, not a vendor statement
Affected range stops below iOS 13.6 and iPadOS 13.6, so it looks safe — our inference, not a vendor statement
v < 10.15.6v < macOS Catalina 10.15.6
Affected range stops below 10.15.6, so it looks safe — our inference, not a vendor statement
Affected range stops below macOS Catalina 10.15.6, so it looks safe — our inference, not a vendor statement
v < 13.4.8v < tvOS 13.4.8
Affected range stops below 13.4.8, so it looks safe — our inference, not a vendor statement
Affected range stops below tvOS 13.4.8, 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:

References (3)

x_refsource_MISCVendor Advisory
https://support.apple.com/kb/HT211288
x_refsource_MISCVendor Advisory
https://support.apple.com/kb/HT211289
x_refsource_MISCVendor Advisory
https://support.apple.com/kb/HT211290

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-120

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