CVE-2026-44470: The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions si

Q: How do I fix CVE-2026-44470?

claude desktop: upgrade to 1.3834.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-44470 being exploited?

CVE-2026-44470 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-44470 affect?

CVE-2026-44470 affects claude desktop. Severity is high (CVSS 7.8). 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 whet

Routine

HIGH 7.8UPGRADE

CVE-2026-44470 is a high-severity flaw (CVSS 7.8) affecting claude desktop. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 whether the VM bundle directory was a real directory or an NTFS directory junction before creating files within it. A local non-elevated user could replace the user-writable VM bundle directory with a directory jun

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 95%)
CISA exploited list	No
Weakness	CWE-59, CWE-269
Published	2026-05-13
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: anthropic

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-13 16:16 UTCPublished CVE record published
2026-10-26 14:10 UTCUpdated Record last modified

anthropic claude desktop UPGRADE

Affected: < 1.3834.0

Fixed in: 1.3834.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy claude-desktop || rpm -q claude-desktop || claude-desktop --version

2. UPGRADE to 1.3834.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade claude-desktop

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade claude-desktop

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-44470?

claude desktop: upgrade to 1.3834.0. Exact commands for each OS are on this page.

Is CVE-2026-44470 being exploited?

CVE-2026-44470 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-44470 affect?

CVE-2026-44470 affects claude desktop. Severity is high (CVSS 7.8). 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 whet

How urgent is CVE-2026-44470?

Priority 28/100. High severity

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-44467 MEDIUM 6.8 UPGRADE The Claude Desktop app gives you Claude Code with a graphical interface built for running multiple sessions si

References

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