Is CVE-2026-43743 in the CISA KEV catalog?

No. CVE-2026-43743 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-43743?

CVE-2026-43743 has a CVSS v3 base score of 4.7 (MEDIUM).

What is the EPSS score for CVE-2026-43743?

CVE-2026-43743 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-43743?

Upgrade ipados to 26.5.2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-43743

MEDIUM

4.7

CVSS v3

NVD

Description

A race condition was addressed with improved state handling. This issue is fixed in iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. An app may be able to cause unexpected system termination.

CWE-362Race Condition

How to fix

Remediation Available

ipadosNVD

Affected:< 26.5.2Fixed in:26.5.2CVE-2026-43743derived from NVD

iphone osNVD

Affected:< 26.5.2Fixed in:26.5.2CVE-2026-43743derived from NVD

macosNVD

Affected:>= 26.0, < 26.5.2Fixed in:26.5.2CVE-2026-43743derived 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 ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Vendor Advisory2

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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 2026-06-30.