Denial-of-service in Apple CoreUtils via null pointer dereference
CVE-2026-28886 is a null pointer dereference vulnerability in Apple's CoreUtils component. Apple states the issue was addressed with improved input validation. The flaw affects multiple Apple operating systems prior to iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Sequoia 15.7.5, macOS Sonoma 14.8.5, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, and watchOS 26.4. According to Apple's advisory text, a user in a privileged network position may be able to trigger the null dereference and cause a denial-of-service. No more specific vulnerable function or protocol path is provided in the supplied content.
Are you exposed to this one?
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A null pointer dereference vulnerability that may allow a privileged network-position user to cause denial of service.
A medium-severity privacy/app sandbox issue that could allow enumeration of installed apps, enabling device profiling.
A null pointer dereference vulnerability in macOS Sequoia that could allow a user in a privileged network position to cause a denial-of-service.
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.