Cyber Resilience

CVE-2023-23518

High

Published: 27 February 2023

Published
27 February 2023
Modified
11 March 2025
KEV Added
—
Patch
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CVSS Score v3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.0031 54.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2023-23518 is a high-severity Out-of-bounds Write (CWE-787) vulnerability in Apple Macos. Its CVSS base score is 8.8 (High).

Operationally, ranked in the top 45.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

The issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.6.3, macOS Ventura 13.2, watchOS 9.3, macOS Big Sur 11.7.3, Safari 16.3, tvOS 16.3, iOS 16.3 and iPadOS 16.3. Processing maliciously crafted web content may…

more

lead to arbitrary code execution.

CWE(s)
NVD-CWE-noinfoCWE-787

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

apple
safari
≤ 16.3
apple
ipados
≤ 16.3
apple
iphone os
≤ 16.3
apple
macos
≤ 11.7.3 · 12.0 — 12.6.3 · 13.0 — 13.2
apple
tvos
≤ 16.3
apple
watchos
≤ 9.3

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SI-16 Memory Protection
addresses: CWE-787

Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.

References