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CVE-2026-28848 is a buffer overflow vulnerability in the SMB component of macOS. The flaw was addressed through improved bounds checking and affects macOS Sequoia prior to 15.7.7 and macOS Tahoe prior to 26.5. Successful exploitation by a remote attacker may trigger unexpected system termination. The available information identifies the issue as a memory-safety error in SMB request handling or related network-exposed processing, but does not provide the specific vulnerable function or code path.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
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.
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.
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.