CVE-2019-8809 — A validation issue was addressed with improved logic

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LOW

A validation issue was addressed with improved logic

Published Oct 27, 2020

3.3

LOW

CVSS 3.1

EPSS 0.32%

Description

A validation issue was addressed with improved logic. This issue is fixed in macOS Catalina 10.15, iOS 13.1 and iPadOS 13.1, tvOS 13, watchOS 6, iOS 13. A local app may be able to read a persistent account identifier.

Affected products

Vendor Apple Product iOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13
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
Vendor Apple Product tvOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <13
Vendor Apple Product watchOS Default
n/a
- Version
  unspecified
  Status
  affected
  Constraints
  <6

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

n/a

Version	Status	Constraints
unspecified	affected	<13

Apple

iOS and iPadOS

n/a

Version	Status	Constraints
unspecified	affected	<13.1

Apple

macOS

n/a

Version	Status	Constraints
unspecified	affected	<10.15

Apple

tvOS

n/a

Version	Status	Constraints
unspecified	affected	<13

Apple

watchOS

n/a

Version	Status	Constraints
unspecified	affected	<6

Remediation

No remediation recorded yet.

Metrics

0.32% 0.00316

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.00316

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 (9 key points)

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

Date	Score	Percentile	Model
Oct 2, 2026	0.32% (0.00316)	22.33th	v5 (v2026.06.15)
Sep 20, 2026	0.32% (0.00316)	24.79th	v5 (v2026.06.15)
Jul 20, 2024	0.05% (0.00047)	17.99th	v3 (v2023.03.01)
May 7, 2024	0.05% (0.00047)	16.49th	v3 (v2023.03.01)
Mar 7, 2023	0.05% (0.00047)	14.46th	v3 (v2023.03.01)
Mar 6, 2023	0.95% (0.00950)	32.28th	v2 (v2022.01.01)
Feb 4, 2022	0.95% (0.00950)	13.46th	v2 (v2022.01.01)
Feb 3, 2022	0.18% (0.00184)	1.27th	v5 (v2026.06.15)
Apr 14, 2021	0.18% (0.00184)	0.00th	v1

Weaknesses (0)

No CWE recorded.

References (5)

https://support.apple.com/en-us/HT210603
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210604
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210606
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210607
x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210634
x_refsource_MISCRelease NotesVendor Advisory

Link	Providers	Tags
https://support.apple.com/en-us/HT210603		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210604		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210606		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210607		x_refsource_MISCRelease NotesVendor Advisory
https://support.apple.com/en-us/HT210634		x_refsource_MISCRelease NotesVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner apple

Published Oct 27, 2020

Updated Aug 4, 2024

Reserved Feb 18, 2019

Link CVE-2019-8809

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2019-8809

Red Hat

Severity n/a

Public date n/a

Links CVE-2019-8809