Network & InfrastructureBleeping Computer
9.1 — CRITICAL
Critical Palo Alto VPN bug now exploited by Qilin ransomware gang
The Qilin ransomware gang is exploiting a critical PAN-OS GlobalProtect authentication bypass flaw to breach victims' networks, according to cybersecurity company Arctic Wolf. [...]
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
The Qilin ransomware gang is exploiting a critical PAN-OS GlobalProtect authentication bypass flaw (CVE-2026-0257) to breach corporate networks, with multiple affiliates actively involved in the attacks. The vulnerability was patched by Palo Alto Networks on May 13.
⚙️Technical Details
Affected Systems
Paloaltonetworks Pan-OsPaloaltonetworks Prisma AccessSiemens Ruggedcom Ape1808
💥Impact Assessment
Severity: critical
🛡️Recommended Actions
1Apply the patch for CVE-2026-0257 as soon as possible
2Monitor GlobalProtect VPN instances for suspicious activity
3Implement additional security controls to prevent lateral movement in case of a breach
📦Affected Products
Paloaltonetworks Pan-OsPaloaltonetworks Prisma AccessSiemens Ruggedcom Ape1808Siemens Ruggedcom Ape1808 Firmware
🔐NVD Verified DataVERIFIED
CVE-2026-0257 ↗CVSS 9.1 — CRITICAL
Attack Vector
NETWORK
Complexity
LOW
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:NWeaknesses
CWE-565
Affected Products (CPE)
Paloaltonetworks Pan-OsPaloaltonetworks Prisma AccessSiemens Ruggedcom Ape1808Siemens Ruggedcom Ape1808 Firmware
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