CVE-2023-40414

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-01-11. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

A fix is available — apply it.

A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 10, iOS 17 and iPadOS 17, tvOS 17, macOS Sonoma 14, Safari 17. Processing web content may lead to arbitrary code execution.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: 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
Severity98% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
60.5%
KEV
Not listed

Published

January 10, 2024

Last Modified

June 20, 2025

Advisory Details (6)

Auto-updated Jun 27, 2026
No patch confirmed yet.
generic

About the security content of iOS 17 and iPadOS 17 - Apple Support

https://support.apple.com/en-us/HT213938
generic

About the security content of watchOS 10 - Apple Support

https://support.apple.com/en-us/HT213937
generic

About the security content of tvOS 17 - Apple Support

https://support.apple.com/en-us/HT213936
generic

oss-security - WebKitGTK and WPE WebKit Security Advisory WSA-2024-0001

http://www.openwall.com/lists/oss-security/2024/02/05/8
generic

About the security content of Safari 17 - Apple Support

https://support.apple.com/en-us/HT213941
generic

About the security content of macOS Sonoma 14 - Apple Support

https://support.apple.com/en-us/HT213940

Vendor Advisories for CVE-2023-40414(3)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatwebkitgtk4-0:2.48.3-2.el7_92025-07-07redhat
redhatwebkit2gtk3-0:2.42.5-1.el82024-05-22redhat
redhatwebkit2gtk3-0:2.42.5-1.el92024-04-30redhat

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.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 49× 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 110 total refreshes for this CVE.

  1. 2026-07-23 02:25 UTCEG score recompute
  2. 2026-07-22 23:12 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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  50. 2026-06-09 10:40 UTCOSV refresh
  51. 2026-06-08 14:16 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-40414?
CVE-2023-40414 is a critical vulnerability published on January 10, 2024. A use-after-free issue was addressed with improved memory management. This issue is fixed in watchOS 10, iOS 17 and iPadOS 17, tvOS 17, macOS Sonoma 14, Safari 17. Processing web content may lead to arbitrary code execution.
When was CVE-2023-40414 disclosed?
CVE-2023-40414 was first published in the National Vulnerability Database on January 10, 2024, with the most recent update on June 20, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-40414 actively exploited?
CVE-2023-40414 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-40414?
CVE-2023-40414 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2023-40414?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-40414, 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.

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