Denial-of-service in Apple Calling Framework
CVE-2026-28894 is a denial-of-service vulnerability in Apple's Calling Framework. Apple states the issue was addressed through improved input validation, indicating the flaw stems from insufficient validation of attacker-controlled input handled by the framework. Successful exploitation may allow a remote attacker to trigger a denial-of-service condition in affected Apple platforms. Apple lists fixes in iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, and macOS Tahoe 26.4.
Are you exposed to this one?
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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
9 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote denial-of-service vulnerability affecting Calling Framework.
A denial-of-service vulnerability that may be triggered remotely.
A denial-of-service vulnerability in macOS Sequoia that could allow a remote attacker to cause service disruption.
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.