Criminal Groups Are Selling Access to Your Network — CVE-2026-0257 Explained

There's a dark web marketplace selling bundled access to companies with revenues between $10M and $10B — 10 targets for $10,000. At the same time, a critical Palo Alto GlobalProtect VPN flaw (CVE-2026-0257) is being actively exploited to tunnel directly into corporate networks using forged authentication cookies. Two attack waves have already been documented. CISA added it to the Known Exploited Vulnerabilities catalog. If you haven't patched — and even if you have — your network may already be compromised.
Key Takeaways:

Patch CVE-2026-0257 immediately — GlobalProtect VPN authentication bypass is under active exploitation
Audit all VPN sessions for anomalous connections, unexpected geos, and off-hours access
Run a threat hunt — a clean firewall does not mean a clean network
Rapid7 — CVE-2026-0257 Exploitation Analysis: https://www.rapid7.com/blog/post/etr-rapid7-observed-exploitation-of-pan-os-globalprotect-authentication-bypass-vulnerability-cve-2026-0257/
The Hacker News — PAN-OS GlobalProtect Auth Bypass Under Active Exploitation: https://thehackernews.com/2026/05/pan-os-globalprotect-authentication.html
Huntress — Ransomware & Access Broker Trends 2026: https://www.huntress.com/ransomware-guide/ransomware-trends

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