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CVE-2026-77179 is a critical sandbox-escape vulnerability in the macOS virtio-fs host server used by Docker Sandboxes to share a workspace between a sandbox microVM and the host. When reopening an unlinked file from a previously stored pathname, the host component improperly follows symbolic links. Guest-controlled code can replace a parent directory with a symbolic link after the path has been recorded, racing the reopen operation and redirecting it outside the authorized shared workspace. The issue affects Docker Sandboxes 0.28.0 through 0.41.9 on macOS.
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What an attacker gets, and what they’ve been doing with it.
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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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical symlink time-of-check/time-of-use vulnerability in the Docker Sandboxes virtio-fs host server on macOS. Malicious code running in a sandbox VM can escape the shared project directory and read or modify arbitrary host files with the privileges of the host account running the VM.
A critical symlink race/path-handling vulnerability in Docker Sandboxes' virtio-fs host server that can allow a malicious sandbox guest to escape its shared workspace and read or modify host files accessible to the VMM user, potentially leading to macOS host compromise.
A critical symlink race condition in Docker Sandboxes' virtio-fs host server that can allow a malicious guest workload to escape its approved shared workspace and read or modify host files accessible to the VMM user, potentially leading to macOS host compromise.
A symlink-following vulnerability in the macOS virtio-fs host server used by Docker Sandboxes. A malicious guest can replace a parent directory with a symlink during reopening of an unlinked file, escaping the shared workspace to read or modify arbitrary host files as the VMM user, with potential host code execution.
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.