Is CVE-2025-43520 in the CISA KEV catalog?

Yes. CVE-2025-43520 is on the CISA Known Exploited Vulnerabilities list, added 2026-03-20.

What is the CVSS severity of CVE-2025-43520?

CVE-2025-43520 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2025-43520?

CVE-2025-43520 has an EPSS score of 0.41% (33th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43520?

Upgrade ipados to 18.7.2 or later. Fixes are available for 6 affected products.

CVE & CISA-KEV Catalog

CVE-2025-43520

MEDIUMCISA KEV

5.5

CVSS v3

NVD

Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may be able to cause unexpected system termination or write kernel memory.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

ipadosNVD

Affected:< 18.7.2Fixed in:18.7.2CVE-2025-43520derived from NVD

iphone osNVD

Affected:< 18.7.2Fixed in:18.7.2CVE-2025-43520derived from NVD

macosNVD

Affected:>= 15.0, < 15.7.2Fixed in:15.7.2CVE-2025-43520derived from NVD

tvosNVD

Affected:< 26.1Fixed in:26.1CVE-2025-43520derived from NVD

visionosNVD

Affected:< 26.1Fixed in:26.1CVE-2025-43520derived from NVD

watchosNVD

Affected:< 26.1Fixed in:26.1CVE-2025-43520derived 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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.41%probability of exploitation in 30 days

33rdpercentile

Low risk: more likely to be exploited than 33% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Remediation due: 2026-04-03

References

Vendor Advisory8

Government Resource1

cisa.gov

Technical Description1

cloud.google.com

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	92%	-	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 2026-04-03.