firewall
Safeguard articles tagged "firewall" — guides, analysis, and best practices for software supply chain and application security.
4 articles
SonicWall SonicOS Scanning Surge in May 2026: The CVE-2026-0400 Early-Warning Pattern
GreyNoise recorded ~597,000 SonicWall SonicOS scanning sessions on May 12, 2026, roughly 46x baseline. The pattern echoes the recon waves that preceded CVE-2026-0400's disclosure. Here is how to read the signal.
CVE-2026-0300 in Palo Alto PAN-OS: Patch Posture & SBOM Response
PAN-OS Captive Portal pre-auth RCE scored CVSS 9.3 and landed on CISA KEV with a three-day patch deadline. Defender playbook below.
Palo Alto PAN-OS Authentication Bypass: CVE-2025-0108
A path traversal flaw in Palo Alto Networks PAN-OS management web interface allowed unauthenticated access to sensitive REST API endpoints. Exploitation began within days of disclosure.
Zyxel Firewall CVE-2022-30525: Unauthenticated Command Injection in Your Perimeter Defense
CVE-2022-30525 gave attackers unauthenticated OS command injection on Zyxel firewalls. The irony of a firewall being the weakest point in your network security.
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