CVE-2026-7574
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk1th percentile — higher than 1% of all known CVEs
Summary
The vulnerability in Anthropic Claude Desktop (versions v1.1348.0 through v1.2278.0) involves missing integrity verification of the Cowork VM root filesystem image. A local attacker with unprivileged access to the macOS user account can modify the rootfs.img image, which will be trusted on subsequent VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories.
Risk Assessment
The risk includes privilege escalation within the VM environment and potential access to sensitive data on the host via mounted directories, potentially leading to confidentiality and integrity breaches.
Recommendation
It is recommended to immediately update to the latest version of Anthropic Claude Desktop and implement integrity verification mechanisms for VM images before booting.
Original NVD description (English source)
Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.1348.0, v1.1617.0, and v1.2278.0) validates only file presence and a version marker string before booting rootfs.img, but does not verify image content integrity at time-of-use. A local attacker with unprivileged code execution as the victim macOS user can modify the VM root filesystem image and have it trusted on subsequent Cowork VM boots, enabling persistent arbitrary code execution in the VM and access to host-mounted directories. The estimated CWE mapping is CWE-353 (Missing Support for Integrity Check).