CVE-2020-36615 — An out-of-bounds read was addressed with improved bounds checking

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HIGH

An out-of-bounds read was addressed with improved bounds checking

Published Aug 14, 2023

7.8

HIGH

CVSS 3.1

EPSS 0.25%

Description

An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.0.1. Processing a maliciously crafted font may lead to arbitrary code execution.

Affected products

Vendor Apple Product macOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <11.0

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

macOS

n/a

Version	Status	Constraints
unspecified	affected	<11.0

Remediation

No remediation recorded yet.

Metrics

0.25% 0.00248

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

EPSS probability 0.00248

Score over time

2023–2026

EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v3
EPSS v4
EPSS v5

Table of values (7 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	0.25% (0.00248)	14.57th	v5 (v2026.06.15)
Jun 15, 2026	0.24% (0.00239)	14.72th	v5 (v2026.06.15)
Mar 17, 2025	0.06% (0.00064)	17.29th	v4 (v2025.03.14)
Dec 12, 2024	0.06% (0.00055)	24.87th	v3 (v2023.03.01)
Jun 14, 2024	0.06% (0.00055)	23.04th	v3 (v2023.03.01)
Aug 19, 2023	0.06% (0.00055)	21.02th	v3 (v2023.03.01)
Aug 15, 2023	0.04% (0.00042)	5.71th	v3 (v2023.03.01)