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Medium

User Fingerprinting Privacy Issue in iOS, iPadOS, and visionOS

IdentifiersCVE-2025-43439CWE-200

CVE-2025-43439 is an Apple privacy vulnerability affecting iOS, iPadOS, and visionOS. According to the provided advisory text, the issue allowed an application to fingerprint the user. Apple states the issue was addressed by removing sensitive data. The available information indicates this is a privacy weakness in which exposed or accessible device- or user-related data could be used by an app to derive a stable or distinguishing fingerprint for tracking or identification purposes. The issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, and visionOS 26.1. Specific vulnerable functions or components are not identified in the provided content.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an app to fingerprint the user, undermining user privacy by enabling tracking or re-identification based on sensitive or distinguishing data exposed by the platform. This can facilitate persistent profiling or correlation of a user across app sessions or contexts even without an explicitly granted identifier. The provided content does not indicate code execution, privilege escalation, or direct data modification impact.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by limiting installation and execution of untrusted or unnecessary applications, especially those that may attempt device profiling. Enterprise controls that restrict app installation to trusted sources and minimize app permissions may reduce risk, but the provided content does not describe a complete workaround. The primary mitigation is to install the vendor update.

Remediation

Patch, then assume compromise.

Apply Apple's fixes by updating affected devices to iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, or visionOS 26.1, as applicable. Apple indicates the issue was remediated by removing sensitive data that enabled fingerprinting.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
AppleIpadosoperating_system
AppleIphone Osoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

4 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2025-43439
NVD
nvd.nist.gov/vuln/detail/CVE-2025-43439
MITRE CWE · CWE-200
cwe.mitre.org
support.apple.com
support.apple.com/en-us/125632
support.apple.com
support.apple.com/en-us/125633
support.apple.com
support.apple.com/en-us/125638