7.5

CVE-2018-4277: apple iphone_os Improper Input Validation

CVSS: 7.5v3.0HighModified
Published 11-01-2019Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-4277 is a high (CVSS 7.5) Improper Input Validation vulnerability in apple iphone_os. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79.1% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.87%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-01-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

In iOS before 11.4.1, watchOS before 4.3.2, tvOS before 11.4.1, Safari before 11.1.1, macOS High Sierra before 10.13.6, a spoofing issue existed in the handling of URLs. This issue was addressed with improved input validation.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.87%

Chance of exploitation in the next 30 days

Percentile

79%

Versus all other CVEs

30-day change

0.00 pp

From 1.87% on 22-09-2026

22-09-202622-10-2026
EPSS score
1.87%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Apple5 products

1 vendor · 5 products

References

6 links