Is CVE-2019-8540 in the CISA KEV catalog?

No. CVE-2019-8540 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-8540?

CVE-2019-8540 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2019-8540?

CVE-2019-8540 has an EPSS score of 1.59% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-8540?

Upgrade iphone os to 12.2 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2019-8540

MEDIUMEPSS 73th pctl

5.5

CVSS v3

NVD

Description

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, tvOS 12.2, watchOS 5.2. A malicious application may be able to determine kernel memory layout.

CWE-665

How to fix

Remediation Available

iphone osNVD

Affected:< 12.2Fixed in:12.2CVE-2019-8540derived from NVD

mac os xNVD

Affected:< 10.14.4Fixed in:10.14.4CVE-2019-8540derived from NVD

tvosNVD

Affected:< 12.2Fixed in:12.2CVE-2019-8540derived from NVD

watchosNVD

Affected:< 5.2Fixed in:5.2CVE-2019-8540derived 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

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.59%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory4

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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 2024-11-21.