Loading vulnerability…
CVE-2026-28835 is a use-after-free vulnerability in the SMB component of macOS. The flaw affects the handling of SMB network shares and can be triggered when a macOS system mounts a maliciously crafted SMB share. Apple indicates the issue was addressed through improved memory management. Successful triggering results in unexpected system termination, indicating a denial-of-service condition in the SMB client path during share mounting.
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.
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.
5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Another SMB-related macOS 26.4 vulnerability mentioned as a nearby advisory entry, but not the focus of the article. The authors state their trigger was flaky and do not provide substantive technical analysis here.
A use-after-free vulnerability in macOS Sequoia that could cause system termination when mounting a maliciously crafted SMB network share.
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.