CVE-2019-8774

MEDIUM

5.5

CVSS Score

Published: October 27, 2020 at 07:50 PM UTC

Updated: June 17, 2026 at 02:42 AM UTC

3 products affected across 1 vendormacOSiPhone OSiPadOS

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.6%

Description

A resource exhaustion issue was addressed with improved input validation. This issue is fixed in iOS 13.1 and iPadOS 13.1, macOS Catalina 10.15. Parsing a maliciously crafted iBooks file may lead to a persistent denial-of-service.

Affected

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

iPadOS · Apple

95%

v < 13.1

Affected range stops below 13.1, so it looks safe — our inference, not a vendor statement

iPhone OS · Apple

95%

v < 13.1

Affected range stops below 13.1, so it looks safe — our inference, not a vendor statement

macOS · Apple

95%

v < 10.15

Affected range stops below 10.15, 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:

Patch and advisory references

References (2)

x_refsource_MISCVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT210603

x_refsource_MISCVendor Advisory

Source: [email protected]

https://support.apple.com/en-us/HT210634

CVSS

5.5MEDIUM[email protected]

Attack Vector: LOCAL
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20CWE-400

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