CVE-2018-4388 — A lock screen issue allowed access to the share function on a locked device

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MEDIUM

A lock screen issue allowed access to the share function on a locked device

Published Apr 3, 2019

4.6

MEDIUM

CVSS 3.0

EPSS 0.33%

Description

A lock screen issue allowed access to the share function on a locked device. This issue was addressed by restricting options offered on a locked device. This issue affected versions prior to iOS 12.1.

Affected products

Vendor n/a Product iOS Default
n/a
- Version
  Versions prior to: iOS 12.1
  Status
  affected
  Constraints
  -

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

Vendor

Product

Default status

Versions

n/a

iOS

n/a

Version	Status	Constraints
Versions prior to: iOS 12.1	affected	-

Remediation

No remediation recorded yet.

Metrics

0.33% 0.00327

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

EPSS probability 0.00327

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 1, 2026	0.33% (0.00327)	23.44th	v5 (v2026.06.15)
Sep 20, 2026	0.33% (0.00327)	26.04th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00070)	31.04th	v3 (v2023.03.01)
Jun 13, 2024	0.07% (0.00070)	30.57th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00070)	28.53th	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	0.06% (0.00061)	0.14th	v5 (v2026.06.15)
Apr 14, 2021	0.06% (0.00061)	0.00th	v1