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Vulnerability record · CVE-2026-7574 · published 24 June 2026

CVE-2026-7574: Anthropic Claude Desktop Cowork VM image handling (confirmed across v1.1348.0 through v1.2278.0, including v1.…

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).

8.7 CVSS 3.1 High EPSS 0.11% · top 98.6% CWE-353 · CWE-353 Awaiting Analysis
8.7CVSS 3.1 base score
0.11%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
25 Jun 2026Last modified by NVD

Description

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).

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

References

LinkTags
https://cfp.recon.cx/recon-2026/talk/DZUQYU/
https://takeonme.org/gcves/GCVE-1337-2026-000000000000000000000000000000000000000000000000011101111111010111111111100000

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Source: NIST National Vulnerability Database (record CVE-2026-7574), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.