How severe is CVE-2025-43520?

CVE-2025-43520 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-43520 being actively exploited?

Yes. CVE-2025-43520 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-03-20, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-43520?

CVE-2025-43520 primarily affects Apple Ipados. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-43520?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-43520 have an EU (EUVD) identifier?

Yes. CVE-2025-43520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203153. It is also flagged as exploited in the EUVD (since 2026-03-20).

When was CVE-2025-43520 published?

CVE-2025-43520 was published on 2025-12-12 and last updated on 2026-06-17.

CVE-2025-43520

CVE-2025-43520 is a medium-severity vulnerability in Apple Ipados with a CVSS 3.x base score of 5.5. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-03-20). The underlying weakness is classified as CWE-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-03-20)
EU (EUVD) id: EUVD-2025-203153
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2026-03-20)
Weakness: CWE-120
Affected product: Apple Ipados
Published: 2025-12-12
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-43520?: 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.
How severe is CVE-2025-43520?: CVE-2025-43520 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-43520 being actively exploited?: Yes. CVE-2025-43520 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-03-20, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-43520?: CVE-2025-43520 primarily affects Apple Ipados. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-43520?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-43520 have an EU (EUVD) identifier?: Yes. CVE-2025-43520 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-203153. It is also flagged as exploited in the EUVD (since 2026-03-20).
When was CVE-2025-43520 published?: CVE-2025-43520 was published on 2025-12-12 and last updated on 2026-06-17.

References

Affected products (9)

cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:ipados:26.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:26.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:26.0:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

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