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Vulnerability Details :

CVE-2026-7574

Summary
Assigner-AHA
Assigner Org ID-26969f82-7e87-44d8-9cb5-f6fb926ddd43
Published At-23 Jun, 2026 | 23:54
Updated At-24 Jun, 2026 | 13:04
Rejected At-
Credits

Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use

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).

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:AHA
Assigner Org ID:26969f82-7e87-44d8-9cb5-f6fb926ddd43
Published At:23 Jun, 2026 | 23:54
Updated At:24 Jun, 2026 | 13:04
Rejected At:
▼CVE Numbering Authority (CNA)
Anthropic Claude Desktop Cowork VM Image Contents Not Validated Before Use

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).

Affected Products
Vendor
Anthropic
Product
Claude Desktop Cowork
Default Status
unaffected
Versions
Affected
  • From 1.1348.0 through 1.2278.0 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-353CWE-353 Missing support for integrity check
Type: CWE
CWE ID: CWE-353
Description: CWE-353 Missing support for integrity check
Metrics
VersionBase scoreBase severityVector
3.18.7HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Version: 3.1
Base score: 8.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Todd Manning
coordinator
todb of AHA!
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://cfp.recon.cx/recon-2026/talk/DZUQYU/
related
https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001110111111101011111111110000000000000000000000000000000000000000000000000000001010
third-party-advisory
Hyperlink: https://cfp.recon.cx/recon-2026/talk/DZUQYU/
Resource:
related
Hyperlink: https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001110111111101011111111110000000000000000000000000000000000000000000000000000001010
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:cve@takeonme.org
Published At:24 Jun, 2026 | 00:16
Updated At:24 Jun, 2026 | 14:17

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).

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.18.7HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
N/A
N/A
Type: Secondary
Version: 3.1
Base score: 8.7
Base severity: HIGH
Vector:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-353Secondarycve@takeonme.org
CWE ID: CWE-353
Type: Secondary
Source: cve@takeonme.org
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://cfp.recon.cx/recon-2026/talk/DZUQYU/cve@takeonme.org
N/A
https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001110111111101011111111110000000000000000000000000000000000000000000000000000001010cve@takeonme.org
N/A
Hyperlink: https://cfp.recon.cx/recon-2026/talk/DZUQYU/
Source: cve@takeonme.org
Resource: N/A
Hyperlink: https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001110111111101011111111110000000000000000000000000000000000000000000000000000001010
Source: cve@takeonme.org
Resource: N/A

Change History

0
Information is not available yet

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