Remote DoS buffer overflow in macOS SMB
CVE-2026-28848 is a buffer overflow vulnerability in the SMB component of macOS. Apple states the issue was addressed with improved bounds checking and that it affects macOS Sequoia and macOS Tahoe. The available advisory text does not identify the specific vulnerable function or code path, but indicates the flaw is reachable by a remote attacker via SMB and can trigger unexpected system termination.
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
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A remote denial-of-service vulnerability in SMB that may allow unexpected system termination.
A buffer overflow vulnerability in macOS Tahoe that may allow a remote attacker to cause unexpected system termination.
A buffer overflow vulnerability in macOS Tahoe that could allow a remote attacker to cause unexpected system termination.
A buffer overflow vulnerability in macOS Sequoia that may allow a remote attacker to cause unexpected system termination.
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.