Buffer Overflow in macOS HFS
CVE-2026-28925 is a buffer overflow vulnerability in the HFS component of macOS. Apple states that the issue was addressed with improved bounds checking and affects macOS Sonoma, macOS Sequoia, and macOS Tahoe. The flaw could be triggered by a local app and may result in unexpected system termination or kernel memory being written. Based on the vendor description, the vulnerability is a memory corruption issue in HFS caused by insufficient bounds checking during buffer handling.
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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 vulnerability in HFS that may allow an app to cause unexpected system termination or write kernel memory.
A buffer overflow vulnerability in macOS Tahoe that may allow an app to cause unexpected system termination or write kernel memory.
A buffer overflow vulnerability in macOS Sonoma that may allow an app to cause system termination or write kernel memory.
A buffer overflow vulnerability in macOS Tahoe that could cause system termination or permit kernel memory writes.
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.