WebAuthn credential cross-origin claim in Apple Authentication Services
CVE-2025-24180 is an Authentication Services vulnerability fixed in Safari 18.4, visionOS 2.4, iOS 18.4 and iPadOS 18.4, and macOS Sequoia 15.4. According to Apple, a malicious website may be able to claim WebAuthn credentials from another website that shares a registrable suffix. The issue was addressed with improved input validation. Based on the vendor description, the flaw involves insufficient validation of origin or relying-party context during WebAuthn credential handling, allowing a site under the same registrable suffix to improperly claim credentials associated with a different site.
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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.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.