Known exploited vulnerability
CVE-2025-43510
The short answer
CVE-2025-43510 affects Apple iOS and iPadOS and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2026-03-20: attackers are using it, so patch it first.
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.
Weakness: CWE-667.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Mar 20, 2026
Federal due date Apr 3, 2026
EPSS, next 30 days
0.36%
Higher than 30% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Affected products
iOS and iPadOS, macOS, tvOS, visionOS, watchOS. NVD's record lists the exact affected versions.
References
- support.apple.com/en-us/125632 Release NotesVendor Advisory
- support.apple.com/en-us/125633 Release NotesVendor Advisory
- support.apple.com/en-us/125634 Release NotesVendor Advisory
- support.apple.com/en-us/125635 Release NotesVendor Advisory
- support.apple.com/en-us/125636 Release NotesVendor Advisory
- support.apple.com/en-us/125637 Release NotesVendor Advisory
- support.apple.com/en-us/125638 Release NotesVendor Advisory
- support.apple.com/en-us/125639 Release NotesVendor Advisory
- cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain/ Technical Description
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-43510 US Government Resource
Questions
Is CVE-2025-43510 being exploited?
Yes. CISA added CVE-2025-43510 to its Known Exploited Vulnerabilities catalog on 2026-03-20, with a federal remediation due date of 2026-04-03.
How do I fix CVE-2025-43510?
CISA's 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.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
Related
Latest CVEs this week
Critical and High CVEs from the last 7 days, with KEV and EPSS.
Exploited vulnerabilities by vendor
Every vendor in CISA's KEV catalog, with its count.
Apple exploited vulnerabilities
Everything CISA lists as exploited for Apple.
Vulnerability watch
A briefing and a fix pull request when an advisory hits your dependencies.
Know the day a CVE lands in your code
Connect a GitHub repository and ZeusQA checks its dependencies daily, briefs each advisory and opens the fix. Three test runs free, no card.