CVE-2025-66479 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
4
occurrences
First Seen
May 20, 2026
Last Seen
May 21, 2026

CVE-2025-66479 is a vulnerability tracked across 1 threat cluster and 4 intelligence report mentions on ThreatCluster. First observed May 20, 2026; most recent activity May 21, 2026.

Related Threat Clusters

  • Critical Sandbox Bypass in Claude Code Exposes User Data

    Anthropic's Claude Code AI platform has been found to have a critical network sandbox bypass vulnerability, allowing attackers to exfiltrate sensitive data, including user credentials and source code. Discovered by…

    7 articles · Updated May 20, 2026

Recent Intelligence Reports

  • Anthropic fixes another Claude Code security bypass without telling users — Cybernews · May 21, 2026
  • Anthropic Sandbox Cve 2025 66479 — oddguan.com · May 20, 2026
  • Second Time Same Sandbox Anthropic Claude Code Network Allowlist Bypass Data Exfiltration — oddguan.com · May 20, 2026
  • Even Claude agrees: hole in its sandbox was real and dangerous — Theregister · May 20, 2026

Related Entities

Data Breach Data Exfiltration Anthropic CVE-2025-68143 CWE-200 - Exposure of Sensitive Information T1041 - Exfiltration Over C2 Channel T1567 - Exfiltration Over Web Service GitHub Linux MacOS Sandbox-runtime Claude Code

CVSS v3.1 Breakdown