Is CVE-2025-43359 in the CISA KEV catalog?

No. CVE-2025-43359 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-43359?

CVE-2025-43359 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2025-43359?

CVE-2025-43359 has an EPSS score of 0.86% (55th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43359?

Upgrade ipados to 18.7 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2025-43359

CRITICAL

9.8

CVSS v3

NVD

Description

A logic issue was addressed with improved state management. This issue is fixed in iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, macOS Sequoia 15.7, macOS Sonoma 14.8, macOS Tahoe 26, tvOS 26, visionOS 26, watchOS 26. A UDP server socket bound to a local interface may become bound to all interfaces.

CWE-670

How to fix

Remediation Available

ipadosNVD

Affected:< 18.7Fixed in:18.7CVE-2025-43359derived from NVD

iphone osNVD

Affected:< 18.7Fixed in:18.7CVE-2025-43359derived from NVD

macosNVD

Affected:>= 15.0, < 15.7Fixed in:15.7CVE-2025-43359derived from NVD

tvosNVD

Affected:< 26.0Fixed in:26.0CVE-2025-43359derived from NVD

visionosNVD

Affected:< 26.0Fixed in:26.0CVE-2025-43359derived from NVD

watchosNVD

Affected:< 26.0Fixed in:26.0CVE-2025-43359derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.86%probability of exploitation in 30 days

55thpercentile

Moderate risk: more likely to be exploited than 55% of all known CVEs.

References

Vendor Advisory7

Other references8

Related Vulnerabilities

Other CWE-670 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-9425	High	7.5	17%	-	Fix
CVE-2019-9946	High	7.5	3.1%	-	Fix
CVE-2024-32896	High	7.8	3.0%	KEV	-
CVE-2019-17192	Critical	9.8	2.7%	-	-
CVE-2026-38361	High	7.5	2.6%	-	-
CVE-2020-1914	Critical	9.8	2.5%	-	Fix

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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.