---
title: "CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability"
url: https://erroneo.us/security/cve/CVE-2025-43510/
description: "CVE-2025-43510 (Apple Multiple Products): Exploited in the wild (CISA KEV). A memory corruption issue was addressed with improved lock state checking. This…"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-12-12
date_modified: 2026-04-02
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2025-43510"
kev: true
cvss: 7.8
epss: 0.00355
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2025-43510: Apple Multiple Products Improper Locking Vulnerability

**Signal:** Exploited: patch now if you run it. CISA has confirmed exploitation in the wild. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Yes, if you run Apple Multiple Products. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2026-03-20, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-04-03 ; treat that as the outer limit, not the target.
- EPSS 0.4% , percentile 28: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 28% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

## What it is

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.

## Affected products (CVE record)

- Apple iOS and iPadOS: < 18.7.2, < 26.1
- Apple macOS: < 14.8.2, < 15.7.2, < 26.1
- Apple tvOS: < 26.1
- Apple visionOS: < 26.1
- Apple watchOS: < 26.1

## Severity

- CISA-ADP CVSS 3.1: 7.8 `CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: added 2026-03-20; federal due date 2026-04-03. Known ransomware use: Unknown.
- CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- CISA SSVC assessment: exploitation active , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.36% probability of exploitation activity in the next 30 days; percentile 28.

## Sources

- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125632)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125633)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125634)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125635)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125636)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125637)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125638)
- [Listed in CISA KEV notes (support.apple.com)](https://support.apple.com/en-us/125639)
- [CVE.org record CVE-2025-43510](https://www.cve.org/CVERecord?id=CVE-2025-43510)
- [NVD entry CVE-2025-43510](https://nvd.nist.gov/vuln/detail/CVE-2025-43510)
- [CISA Known Exploited Vulnerabilities catalog entry](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43510)
- [cloud.google.com](https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/)

---
Source page: https://erroneo.us/security/cve/CVE-2025-43510/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt