CVE-2018-4200

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
8.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Exploit-DB (verified), public exploit)
CISA-KEV: Not listedEPSS PROB: 9%CVSS: 8.8Exploit: Exploit-DB (verified) · public exploitExposed: 0

A fix is available — apply it.

An issue was discovered in certain Apple products. iOS before 11.3.1 is affected. Safari before 11.1 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. 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 that triggers a WebCore::jsElementScrollHeightGetter use-after-free.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
70(Track)
EG Risk 70/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
9%
EPSS %ILE
95%
KEV
Not listed

Published

June 8, 2018

Last Modified

November 21, 2024

Advisory Details (9)

Auto-updated Aug 2, 2026
No patch confirmed yet.
generic

About the security content of iCloud for Windows 7.5 - Apple Support

https://support.apple.com/HT208853
generic

About the security content of iTunes 12.7.5 for Windows - Apple Support

https://support.apple.com/HT208852
generic

About the security content of tvOS 11.4 - Apple Support

https://support.apple.com/HT208850
generic

About the security content of iOS 11.3.1 - Apple Support

https://support.apple.com/HT208743
generic

About the security content of Safari 11.1 - Apple Support

https://support.apple.com/HT208741
generic

WebkitGTK+: Multiple vulnerabilities (GLSA 201808-04) — Gentoo security

https://security.gentoo.org/glsa/201808-04
generic
https://bugs.chromium.org/p/project-zero/issues/detail?id=1525
generic
http://www.securitytracker.com/id/1040743
generic

SecurityFocus

http://www.securityfocus.com/bid/103961

Vendor Advisories for CVE-2018-4200(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(2)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibwebkit2gtk-4.0-doc (2.20.2-0ubuntu0.16.04.1) @ xenial2026-05-28ubuntu
redhatzenity-0:3.28.1-1.el72018-10-30redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.20.2-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.20.2-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.20.2-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
webkit2gtk—2.20.2-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 6× in last 7d / 26× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 123 total refreshes for this CVE.

  1. 2026-08-25 13:45 UTCEPSS rescore
  2. 2026-08-24 14:11 UTCEPSS rescore
  3. 2026-08-22 16:07 UTCOSV refresh
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  8. 2026-07-23 01:36 UTCEG score recompute
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  66. 2026-06-15 18:39 UTCOSV refresh
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  75. 2026-06-06 13:45 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-44566✓ verified
    First seen May 2, 2018

    WebKit - 'WebCore::jsElementScrollHeightGetter' Use-After-Free

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2018-4200?
CVE-2018-4200 is a high vulnerability published on June 8, 2018. An issue was discovered in certain Apple products. iOS before 11.3.1 is affected. Safari before 11.1 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. The issue involves the "WebKit" component. It allows remote…
When was CVE-2018-4200 disclosed?
CVE-2018-4200 was first published in the National Vulnerability Database on June 8, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2018-4200 actively exploited?
CVE-2018-4200 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 9% probability of exploitation in the next 30 days, which ranks it in the top 5.3% of all scored CVEs.
What is the CVSS score of CVE-2018-4200?
CVE-2018-4200 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2018-4200?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-4200, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2018-4200

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