Loading vulnerability…
CVE-2026-64699 is a kernel information disclosure vulnerability in Apple webdavfs. In the vulnerable WebDAV read path, the kernel allocates a buffer of up to 16 MB without zero-initializing it, then relies on a userspace WebDAV agent response that may be treated as successful even when no response body is returned. A malicious WebDAV server can induce this condition by returning an empty HTTP 206 response. Because the implementation does not adequately verify that the received data length satisfies the expected buffer contents before copying data back to userspace, uninitialized kernel memory can be returned to the requesting application. Apple describes the issue as a memory initialization flaw addressed through improved memory handling.
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.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A kernel memory disclosure vulnerability in macOS webdavfs that can leak up to 16 MB of uninitialized kernel memory to user space via a malicious WebDAV server, used in an exploit chain to bypass Apple MIE.
An information disclosure vulnerability in Apple's WebDAV implementation where a malicious WebDAV server can trigger an out-of-band read path that allocates an uninitialized kernel buffer and copies it to userspace without verifying how many bytes were actually received, leaking kernel memory.
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.