A use-after-free issue was addressed with improved memory management.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 26.2, 18.7.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Apple's Safari web browser and its iPhone, iPad, Mac, Apple TV, Vision Pro, and Apple Watch operating systems are affected. A flaw in memory handling means that opening maliciously crafted web content could allow an attacker to run arbitrary code on the device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.2, iOS 18.7.3 and iPadOS 18.7.3, iOS 26.2 and iPadOS 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, watchOS 26.2. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 26. CVE-2025-14174 was also issued in response to this report.
Timeline
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CVE published
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Apple Safari
fixed in 26.2
- Apple iOS and iPadOS
fixed in 18.7.3; fixed in 26.2
- Apple macOS
fixed in 26.2
- Apple tvOS
fixed in 26.2
- Apple visionOS
fixed in 26.2
- Apple watchOS
fixed in 26.2
References 7
Questions about CVE-2025-43529
What does this mean?
A use-after-free bug means memory is used after it has been released, which can corrupt memory. Per the facts, processing maliciously crafted web content may lead to memory corruption. Apple's advisory says the issue was addressed with improved memory management.Source: support.apple.com
Am I affected, and how do I check?
Safari is affected before 26.2, and iOS and iPadOS before 26.2 (with 18.7.3 also fixed for the 18 line). macOS, tvOS, visionOS and watchOS are affected before 26.2. To check, look at the version shown in Settings > General > About on iPhone, iPad, Apple TV, Apple Watch or Apple Vision, or About This Mac on a Mac, and for Safari check its version in Safari settings.Source: support.apple.com
What should I do about it?
Update iOS and iPadOS to 18.7.3 or 26.2, and update Safari, macOS, tvOS, visionOS and watchOS to 26.2. Apple's advisory lists these fixed versions.Source: support.apple.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2025-12-15, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data