VulnSocial

CVE-2026-44470Patch(anthropic / claude_desktop)

LOWCVSS 7.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch anthropic claude_desktop systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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 junction pointing to an attacker-chosen location, causing the service to create a SYSTEM-owned file in an arbitrary directory. This could be leveraged for local privilege escalation. This vulnerability is fixed in 1.3834.0.

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1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-59CWE-269

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • claude_desktop
  • windows

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-06); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
anthropicmicrosoft
Products
claude_desktopwindows

1 version affected across 2 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-06: 1Mentions · 2026-06-02: 1Patch / Workaround · 2026-05-06: 1Technical Details · 2026-05-06: 1Technical Details · 2026-06-02: 105-0606-02
Signal classification2 categories
Patch
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-061
Patch1
2026-06-021
Disclosure1
Full discourse2 posts
  • Piquo@piquopiquo
    Patch

    My first public CVE! This allowed a malicious actor to leverage Claude Code to cause a local privilege escalation. Please update to Version 1.3834.0 or higher. CVE-2026-44470 https://github.com/anthropics/claude-code/security/advisories/GHSA-5p5x-5294-qhp3

    Post summary

    The notice highlights a local privilege escalation flaw in Claude Code (CVE-2026-44470) and urges users to upgrade to version 1.3834.0 or newer to mitigate the issue.

    163174135.2K
    151 followersView on X
  • DailyCVE@dailycve
    Disclosure

    🔴 Claude Desktop for #Windows, Local Privilege Escalation via NTFS Directory Junction, #CVE-2026-44470 (HIGH) -DC-Jun2026-109 https://dailycve.com/claude-desktop-for-windows-local-privilege-escalation-via-ntfs-directory-junction-cve-2026-44470-high-dc-jun2026-109/

    Post summary

    The post announces CVE‑2026‑44470 as a high‑severity local privilege escalation vulnerability in Claude Desktop for Windows, caused by NTFS Directory Junction misuse.

    0000044
    209 followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appanthropicclaude_desktop---
OSmicrosoftwindows---

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