CVE-2025-66479

LOW EPSS 3.4%

Published Dec 4, 20257mo ago · Modified Jun 17, 20262w ago

1.8 CVSS 4.0

Low

Published Dec 4, 2025 7mo ago

Last Modified Jun 17, 2026 2w ago

Description

Anthropic Sandbox Runtime is a lightweight sandboxing tool for enforcing filesystem and network restrictions on arbitrary processes at the OS level, without requiring a container. Prior to 0.0.16, due to a bug in sandboxing logic, sandbox-runtime did not properly enforce a network sandbox if the sandbox policy did not configure any allowed domains. This could allow sandboxed code to make network requests outside of the sandbox. A patch for this was released in v0.0.16.

CVSS Details

Base Score

1.8

Exploitability

—

Impact

—

Vector string

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector Local

Attack Complexity Low

Privileges Required High

User Interaction None

Scope X

Threat Intelligence

EPSS Exploit Probability

3.4% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-693

References 2

github.com https://github.com/anthropic-experimental/sandbox-runtime/commit/bea2930cc1db9c73a1b15acf6dc19c5261aec1f3
github.com https://github.com/anthropic-experimental/sandbox-runtime/security/advisories/GHSA-9gqj-5w7c-vx47

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.