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Fencer Vulns
high 8.8

CVE-2018-4222 in the critical feed json

An issue was discovered in certain Apple products.

published 2018-06-08 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-16008

cvss
8.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.7%
EPSS 10.7% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code via a crafted web site that leverages a getWasmBufferFromValue out-of-bounds read during WebAssembly compilation.

Patch / fix

  • apple safari 11.1.1
  • apple icloud 7.5
  • apple itunes 12.7.5
  • apple iphone_os 11.4
  • apple tvos 11.4
  • apple watchos 4.3.1
  • webkit2gtk Debian 14, Debian 13, Debian 12 2.20.3-1

debian advisories DEBIAN-CVE-2018-4222

  • webkit2gtk Ubuntu 16.04 LTS 2.20.3-0ubuntu0.16.04.1
  • webkit2gtk Ubuntu 18.04 LTS 2.20.3-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-4222

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • webkit2gtk3 SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 +2 more 2.20.3-2.23.8
  • webkit2gtk3 SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.20.3-3.3.1

suse advisories SUSE-SU-2018:3387-1SUSE-SU-2018:2075-1

  • gtk3 openSUSE Tumbleweed 2.32.4-1.1

opensuse advisories openSUSE-SU-2024:11506-1

Timeline

  1. First public exploit (EDB-44859)
  2. Published

Exploit prediction

10.70% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-44859 WebKit - WebAssembly Compilation Info Leak dos, 2018-06-08
  • bugs.chromium.org https://bugs.chromium.org/p/project-zero/issues/detail?id=1545 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 8.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.