CVE-2018-4439

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.94% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 78.6% of scored records. A rank, not a probability.

NVD base score

6.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2019-04-03 17:43Z7 YR AGO

Last updated

2024-08-05 05:18Z2 YR AGO

Reserved

2018-01-02

Assigning CNA

apple

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

1e0f1c1d58740bd97c5068ff7bec9895c406fe02132e5a9fa2e582ca498960ac

• support.apple.comhttps://support.apple.com/kb/HT209340x_refsource_MISC
• support.apple.comhttps://support.apple.com/kb/HT209344x_refsource_MISC
• support.apple.comhttps://support.apple.com/kb/HT209346x_refsource_MISC
• support.apple.comhttps://support.apple.com/kb/HT209345x_refsource_MISC