CVE-2019-8774 — A resource exhaustion issue was addressed with improved input validation

Back Back to CVE browser

MEDIUM

A resource exhaustion issue was addressed with improved input validation

Published Oct 27, 2020

5.5

MEDIUM

CVSS 3.1

EPSS 0.61%

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 products

Vendor Apple Product iOS and iPadOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13.1
Vendor Apple Product macOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <10.15

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Apple

iOS and iPadOS

n/a

Version	Status	Constraints
unspecified	affected	<13.1

Apple

macOS

n/a

Version	Status	Constraints
unspecified	affected	<10.15

Remediation

No remediation recorded yet.

Metrics

0.61% 0.00614

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00614

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.61% (0.00614)	47.49th	v5 (v2026.06.15)
Sep 20, 2026	0.61% (0.00614)	48.02th	v5 (v2026.06.15)
Jul 20, 2024	0.06% (0.00063)	27.87th	v3 (v2023.03.01)
Jul 3, 2024	0.06% (0.00063)	27.64th	v3 (v2023.03.01)
Sep 3, 2023	0.06% (0.00063)	25.62th	v3 (v2023.03.01)
Mar 7, 2023	0.06% (0.00059)	22.67th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.09% (0.00092)	0.27th	v5 (v2026.06.15)
Apr 14, 2021	0.09% (0.00092)	0.00th	v1