8.8

CVE-2018-4121: apple icloud

CVSS: 8.8v3.0HighModified
AliasesUBUNTU-CVE-2018-4121DEBIAN-CVE-2018-4121
Published 03-04-2018Last modified 05-08-2024

Vulnerability summary

CVE-2018-4121 is a high (CVSS 8.8) vulnerability in apple icloud. EPSS estimates a 13.10% chance of exploitation in the next 30 days, higher than 96.3% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
48/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.0 (NVD)
EPSS score
13.10%
0%100%
Medium · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github, exploit-database

Advisory lineage

Upstream 0 · Downstream 2 · Related 1

Timeline

  1. 03-04-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

An issue was discovered in certain Apple products. iOS before 11.3 is affected. Safari before 11.1 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

13.10%

Chance of exploitation in the next 30 days

Percentile

96%

Versus all other CVEs

30-day change

0.00 pp

From 13.10% on 18-09-2026

18-09-202618-10-2026
EPSS score
13.10%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • githubUnverified

    Cve 2018 4121

    Maturity: poc

  • exploit-databasedosmultipleVerified

    WebKit - WebAssembly Parsing Does not Correctly Check Section Order

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Apple6 products
Ubuntu4 products
  • qtwebkit-opensource-srcAll versions (No fix recorded)
  • qtwebkit-sourceAll versions (No fix recorded)
  • webkit2gtk< 2.20.1-0ubuntu0.16.04.1
  • webkitgtkAll versions (No fix recorded)
Debian1 product
  • webkit2gtk< 2.20.0-2

3 vendors · 11 products

References

14 links
Show all 14 references