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CVE-2025-43510

Apple Multiple Products Improper Locking

7.8 HIGHActively exploited (CISA KEV)EPSS 0.36%
  1. Published12 Dec 2025
  2. Added to CISA KEV20 Mar 2026
  3. Remediation due3 Apr 2026
Actively exploited (CISA KEV)

Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain an improper locking vulnerability that could allow a malicious application to cause unexpected changes in memory shared between processes.

Added to KEV: 20 Mar 2026Federal remediation due: 3 Apr 2026

Description

A memory corruption issue was addressed with improved lock state checking. 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 cause unexpected changes in memory shared between processes.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Apple iPadOS< 18.7.2 · 26.0
Apple iPhone OS< 18.7.2 · 26.0
Apple macOS≥ 14.0 < 14.8.2 · ≥ 15.0 < 15.7.2 · 26.0
Apple Tvos< 26.1
Apple Visionos< 26.1
Apple Watchos< 26.1

Remediation

Fixed in
Apple iPadOS≥ 18.7.2
Apple iPhone OS≥ 18.7.2
Apple macOS≥ 14.8.2
Apple Tvos≥ 26.1
Apple Visionos≥ 26.1
Apple Watchos≥ 26.1

References

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Frequently asked

Is CVE-2025-43510 being actively exploited?

Yes. CVE-2025-43510 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 20 Mar 2026.

How severe is CVE-2025-43510?

CVE-2025-43510 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 0.36% probability of exploitation.

Which products are affected by CVE-2025-43510?

Affected products include Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Tvos, Apple Visionos, and 1 more.

How do I fix CVE-2025-43510?

Upgrade affected software to a fixed version, for example Apple iPadOS 18.7.2, Apple iPhone OS 18.7.2, Apple macOS 14.8.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-43510 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.