What is CVE-2026-44470?

CVE-2026-44470 is a high-severity vulnerability in Anthropic Claude_desktop, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2026-05-13.

How severe is CVE-2026-44470?

High severity. CVSS v3 base score is 7.8 out of 10.

Privilege escalation in Anthropic Claude_desktop

CVE-2026-44470

The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions side by side. Prior to 1.3834.0, the CoworkVMService component in Claude Desktop for Windows ran as SYSTEM and did not validate whe…

EPSS: 0.000 (0.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Anthropic Claude_desktop
Anthropics Claude-code — versions < 1.3834.0
Microsoft Windows

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-44470?: CVE-2026-44470 is a high-severity vulnerability in Anthropic Claude_desktop, classified under Improper Link Resolution Before File Access. CVSS score: 7.8/10. Published 2026-05-13.
How severe is CVE-2026-44470?: High severity. CVSS v3 base score is 7.8 out of 10.