Is CVE-2024-40854 in the CISA KEV catalog?

No. CVE-2024-40854 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2024-40854?

CVE-2024-40854 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2024-40854?

CVE-2024-40854 has an EPSS score of 0.38% (30th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2024-40854?

Upgrade ipados to 18.1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2024-40854

MEDIUM

5.5

CVSS v3

NVD

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 17.7.1 and iPadOS 17.7.1, iOS 18.1 and iPadOS 18.1, macOS Sequoia 15.1, macOS Sonoma 14.7.1, macOS Ventura 13.7.1. An app may be able to cause unexpected system termination.

How to fix

Remediation Available

ipadosNVD

Affected:>= 18.0, < 18.1Fixed in:18.1CVE-2024-40854derived from NVD

iphone osNVD

Affected:>= 18.0, < 18.1Fixed in:18.1CVE-2024-40854derived from NVD

macosNVD

Affected:>= 14.0, < 14.7.1Fixed in:14.7.1CVE-2024-40854derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploit Intelligence

0.38%probability of exploitation in 30 days

30thpercentile

Low risk: more likely to be exploited than 30% of all known CVEs.

References

Vendor Advisory4

Other references1

support.apple.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-02.